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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Nitric Acid</title>
<script src="chem1.js" defer></script>
<script src="timer.js" defer></script>
<meta name="Keywords" content="exercises, balancing, chemistry, equations, hydrogen-chloride, ammonia, nitric-acid, nitrates, sulphur-dioxide, hydrogen-sulphide, sodium-hydroxide, sulphuric-acid, preparation ">
<meta name="author" content="Jiban Majumdar">
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<body>
<div>
<img src="myPhoto.jpg" alt="webmaster" width="150" height="200"> <br> <a href="mailto:jibanmajumdar@gmail.com">webmaster</a>
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<table class="center">
<tr>
<td><a href="index.html">Home Page</a></td>
<td><a href="equ.html">Elementary Equations</a></td>
<td><a href="advanced.html">Advanced Equations</a></td>
<td><a href="assorted.html">Assorted Equations</a></td>
<td><a href="hydrogen-chloride.html">Hydrogen Chloride</a></td>
<td><a href="chlorine.html">Chlorine</a></td>
</tr>
<tr>
<td><a href="ammonia.html">Ammonia</a></td>
<td><a href="sulphur-dioxide.html">Sulphur Dioxide</a></td>
<td><a href="hydrogen-sulphide.html">Hydrogen Sulphide</a></td>
<td><a href="sulphuric-acid.html">Sulphuric Acid</a></td>
<td><a href="sodium-hydroxide.html">Sodium Hydroxide</a></td>
<td></td>
</tr>
</table>
<h1 style="text-align:center;">Nitric Acid</h1>
<h2>Practise balancing equations: </h2> <h3>Direction:</h3> <ul><li>In the following equations you will see a blank box before the symbol of each compound and element. Enter the lowest possible number in each box, or leave the box blank if you think the chemical needn't have a number (i.e. the number is equivalent to '1').</li>
<li>When you think the equation is balanced, click on the small button <span style= "color:blue;"><b>"Check answer"</b></span> that appears below it.</li> <lI>If your equation is incorrect, then click the button <span style= "color:blue;"><b> "Reset"</b></span> and try balancing the equation again.</li> <li>In case you are in a hurry or are unable to balance, then click the button <span style= "color:blue;"><b>"Show answer."</b></span></li>
<li>If you want to know the time taken (minutes:seconds) to balance a chemical equation, you click the <span style="color:blue;"><b>"Start"</b></span> button and after balancing the equation, click the <span style="color:blue;"><b>"Stop"</b></span>button. Once, you have noted the time, click the <span style="color:blue;"><b>"Reset Timer"</b></span> button.
</li></ul>
<h3>Note:</h3> If you get no response after clicking 'Check answer' or 'Show answer', your browser has disabled to run this program. Enable it by clicking below the 'address bar' and follow the instructions.
<form name="equations">
<h4>Preparation of Nitric acid:</h4>
1. When Potassium nitrate is heated with concentrated sulphuric acid, nitric acid is formed:
<p style="font-size:115%; text-align:center;"><input style="font-size:16px; text-align: center;"
size=1 name=q1a> KNO<sub>3</sub> + <input style="font-size: 16px; text-align:center;" size=1 name=q1b> H<sub>2</sub>SO<sub>4</sub>→<input style="font-size: 16px; text-align: center;" size=1 name=q1c> KHSO<sub>4 </sub>+ <input style="font-size:16px;text-align:center;" size=1 name=q1d> HNO<sub>3</sub></p>
<p style="font-size:115%; text-align:center;">
<input onclick="check(1,'Preparation of Nitric acid',1,1,1,1,0,0,'KNO<sub>3</sub> + H<sub>2</sub>SO<sub>4</sub>','KHSO<sub>4</sub> + HNO<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(1,'Preparation of Nitric acid',1,1,1,1,0,0,'KNO<sub>3</sub> + H<sub>2</sub>SO<sub>4</sub>','KHSO<sub>4</sub> + HNO<sub>3</sub>');" type="button" value="Show answer"></p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer1">00:00</span>
<button type="button" onclick="startTimer('timer1')">Start</button>
<button type="button" onclick="stopTimer('timer1')">Stop</button>
<button type="button" onclick="resetTimer('timer1')">Reset Timer</button>
</p>
2.When Sodium Nitrate is heated with concentrated sulphuric acid, niric acid is formed:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q2a> NaNO<sub>3</sub> + <input style="font-size: 16px; text-align:center;" size=1 name=q2b> H<sub>2</sub>SO<sub>4</sub>→<input style="font-size: 16px; text-align: center" size=1 name=q2c> NaHSO<sub>4 </sub>+ <input style="font-size:16px;text-align:center;" size=1 name=q2d> HNO<sub>3</sub></p>
<p style="font-size:115%; text-align:center;">
<input onclick="check(2,'Preparation of Nitric acid',1,1,1,1,0,0,'NaNO<sub>3</sub> + H<sub>2</sub>SO<sub>4</sub>','NaHSO<sub>4</sub> + HNO<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(2,'Preparation of Nitric acid',1,1,1,1,0,0,'NaNO<sub>3</sub> + H<sub>2</sub>SO<sub>4</sub>','NaHSO<sub>4</sub> + HNO<sub>3</sub>');" type="button" value="Show answer"></p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer2">00:00</span>
<button type="button" onclick="startTimer('timer2')">Start</button>
<button type="button" onclick="stopTimer('timer2')">Stop</button>
<button type="button" onclick="resetTimer('timer2')">Reset Timer</button>
</p>
<p></p>
<h4>Manufacture of Nitric acid (Ostwald's Process):</h4>
<ul><li>When a mixture of ammonia gas and air is passed over Platinum catalyst at 700<sup>o</sup>Cand 5 atmosphere pressure, nitrogen monoxide (nitric oxide) is formed.</li></ul>
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q3a> NH<sub>3</sub> + <input style="font-size: 16px; text-align:center;" size=1 name=q3b> O<sub>2</sub> ⇌ <input style="font-size: 16px; text-align: center;" size=1 name=q3c> NO + <input style="font-size:16px;text-align:center;" size=1 name=q3d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;">
<input onclick="check(3,'Manufacture of Nitric acid',4,5,4,6,0,0,'NH<sub>3</sub> + O<sub>2</sub>','NO + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(3,'Manufacture of Nitric acid',4,5,4,6,0,0,'4NH<sub>3</sub> + 5O<sub>2</sub>','4NO + 6H<sub>2</sub>O');" type="button" value="Show answer"></p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer3">00:00</span>
<button type="button" onclick="startTimer('timer3')">Start</button>
<button type="button" onclick="stopTimer('timer3')">Stop</button>
<button type="button" onclick="resetTimer('timer3')">Reset Timer</button>
</p>
<p></p>
<ul><li> Nitrogen monoxide then reacts with oxygen at low temperature to form nitrogen dioxide gas: </li></ul>
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q4a> NO + <input style="font-size: 16px; text-align: center;" size=1 name=q4b> O<sub>2</sub>→<input style= "font-size: 16px; text-align: center;" size=1 name=q4c> NO<sub>2</sub></p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(4,'Manufacture of Nitric acid',2,1,2,0,0,0,'NO + O<sub>2</sub>','NO<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(4,'Manufacture of Nitric acid',2,1,2,0,0,0,'2NO+ O<sub>2</sub>','2NO<sub>2</sub>');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer4">00:00</span>
<button type="button" onclick="startTimer('timer4')">Start</button>
<button type="button" onclick="stopTimer('timer4')">Stop</button>
<button type="button" onclick="resetTimer('timer4')">Reset Timer</button>
</p>
<p></p>
<ul><li> Nitrogen dioxide then reacts with water and oxygen to form Nitric acid: </li></ul>
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q5a> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q5b> H<sub>2</sub>O + <input style="font-size: 16px; text-align: center;" size=1 name=q5c> O<sub>2</sub> →<input style="font-size: 16px; text-align: center; " size=1 name=q5d> HNO<sub>3</sub> </p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(5,'Manufacture of Nitric acid',4,2,1,4,0,0,'NO<sub>2</sub> + H<sub>2</sub>O + O<sub>2</sub>','HNO<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(5,'Manufacture of Nitric acid',4,2,1,4,0,0,'4NO<sub>2</sub>+ 2H<sub>2</sub>O + O<sub>2</sub>','4HNO<sub>3</sub>');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer5">00:00</span>
<button type="button" onclick="startTimer('timer5')">Start</button>
<button type="button" onclick="stopTimer('timer5')">Stop</button>
<button type="button" onclick="resetTimer('timer5')">Reset Timer</button>
</p>
<h4>Reactions of dilute Nitric acid:</h4>
1. Magnesium reacts with very dilute nitric acid to form bubbles of Hydrogen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;" size=1 name=q6a> Mg + <input style="font-size: 16px; text-align: center;" size=1 name=q6b> HNO<sub>3 </sub>→ <input style="font-size: 16px; text-align: center;" size=1 name=q6c> Mg(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q6d> H<sub>2</sub></p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(6,'Reactions of Dilute nitric acid',1,2,1,1,0,0,'Mg + HNO<sub>3</sub>','Mg(NO<sub>3</sub>)<sub>2</sub>+ H<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(6,'Reactions of Dilute nitric acid',1,2,1,1,0,0,'Mg + 2HNO<sub>3</sub>','Mg(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer6">00:00</span>
<button type="button" onclick="startTimer('timer6')">Start</button>
<button type="button" onclick="stopTimer('timer6')">Stop</button>
<button type="button" onclick="resetTimer('timer6')">Reset Timer</button>
</p>
<p></p>
2.Dilute Nitric acid reacts with Ammonia to form Ammonium nitrate:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q7a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q7b> NH<sub>3 </sub>→<input style="font-size: 16px; text-align: center;" size=1 name=q7c> NH<sub>4</sub>NO<sub>3</sub> </p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(7,'Reactions of Dilute nitric acid',1,1,1,0,0,0,'HNO<sub>3</sub> + NH<sub>3</sub>','NH<sub>4</sub>NO<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(7,'Reactions of Dilute nitric acid',1,1,1,0,0,0,'HNO<sub>3</sub>+ NH<sub>3</sub>','NH<sub>4</sub>NO<sub>3</sub>');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer7">00:00</span>
<button type="button" onclick="startTimer('timer7')">Start</button>
<button type="button" onclick="stopTimer('timer7')">Stop</button>
<button type="button" onclick="resetTimer('timer7')">Reset Timer</button>
</p>
<p></p>
3. Dilute Nitric acid reacts with white Calcium oxide to form colourless Calcium nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q8a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q8b> CaO → <input style="font-size: 16px; text-align: center;" size=1 name=q8c> Ca(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q8d> H<sub>2</sub>O
<p style="font-size:115%; text-align:center;"> <input onclick="check(8,'Reactions of Dilute nitric acid',2,1,1,1,0,0,'HNO<sub>3</sub> + CaO','Ca(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(8,'Reactions of Dilute nitric acid',2,1,1,1,0,0,'2HNO<sub>3</sub> + CaO','Ca(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer8">00:00</span>
<button type="button" onclick="startTimer('timer8')">Start</button>
<button type="button" onclick="stopTimer('timer8')">Stop</button>
<button type="button" onclick="resetTimer('timer8')">Reset Timer</button>
</p>
<p></p>
4. Dilute Nitric acid reacts with white Magnesium oxide to form colourless Magnesium nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q9a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q9b> MgO →<input style="font-size: 16px; text-align: center;" size=1 name=q9c> Mg(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q9d> H<sub>2</sub>O </p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(9,'Reactions of Dilute nitric acid',2,1,1,1,0,0,'HNO<sub>3</sub> + MgO','Mg(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(9,'Reactions of Dilute nitric acid',2,1,1,1,0,0,'2HNO<sub>3</sub> + MgO','Mg(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer9">00:00</span>
<button type="button" onclick="startTimer('timer9')">Start</button>
<button type="button" onclick="stopTimer('timer9')">Stop</button>
<button type="button" onclick="resetTimer('timer9')">Reset Timer</button>
</p>
<p></p>
5.Dilute Nitric acid reacts with white Zinc oxide to form colourless Zinc nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q10a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q10b> ZnO →<input style="font-size: 16px; text-align: center;" size=1 name=q10c> Zn(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q10d> H<sub>2</sub>O </p>
<p style="font-size:115%; text-align:center;"><input onclick="check(10,'Reactions of Dilute nitric acid',2,1,1,1,0,0,'HNO<sub>3</sub> + ZnO','Zn(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(10,'Reactions of Dilute nitric acid',2,1,1,1,0,0,'2HNO<sub>3</sub> + ZnO','Zn(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer10">00:00</span>
<button type="button" onclick="startTimer('timer10')">Start</button>
<button type="button" onclick="stopTimer('timer10')">Stop</button>
<button type="button" onclick="resetTimer('timer10')">Reset Timer</button>
</p>
<p></p>
6. Dilute Nitric acid reacts with black Copper(II) oxide to form blue solution of Copper(II) nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q11a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q11b> CuO →<input style="font-size: 16px; text-align: center;" size=1 name=q11c> Cu(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q11d> H<sub>2</sub>O </p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(11,'Reactions of Dilute nitric acid',2,1,1,1,0,0,'HNO<sub>3</sub> + CuO','Cu(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(11,'Reactions of Dilute nitric acid',2,1,1,1,0,0,'2HNO<sub>3</sub> + CuO','Cu(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer11">00:00</span>
<button type="button" onclick="startTimer('timer11')">Start</button>
<button type="button" onclick="stopTimer('timer11')">Stop</button>
<button type="button" onclick="resetTimer('timer11')">Reset Timer</button>
</p>
<p></p>
7.Dilute Nitric acid reacts with Potassium hydroxide to form Potassium nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q12a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q12b> KOH →<input style="font-size: 16px; text-align: center;" size=1 name=q12c> KNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q12d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(12,'Reactions of Dilute nitric acid',1,1,1,1,0,0,'HNO<sub>3</sub> + KOH','KNO<sub>3</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(12,'Reactions of Dilute nitric acid',1,1,1,1,0,0,'HNO<sub>3</sub> + KOH','KNO<sub>3</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer12">00:00</span>
<button type="button" onclick="startTimer('timer12')">Start</button>
<button type="button" onclick="stopTimer('timer12')">Stop</button>
<button type="button" onclick="resetTimer('timer12')">Reset Timer</button>
</p>
<p></p>
8.Dilute Nitric acid reacts with Sodium hydroxide to form Sodium nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q13a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q13b> NaOH →<input style="font-size: 16px; text-align: center" size=1 name=q13c> NaNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q13d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(13,'Reactions of Dilute nitric acid',1,1,1,1,0,0,'HNO<sub>3</sub> + NaOH','NaNO<sub>3</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(13,'Reactions of Dilute nitric acid',1,1,1,1,0,0,'HNO<sub>3</sub> + NaOH','NaNO<sub>3</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer13">00:00</span>
<button type="button" onclick="startTimer('timer13')">Start</button>
<button type="button" onclick="stopTimer('timer13')">Stop</button>
<button type="button" onclick="resetTimer('timer13')">Reset Timer</button>
</p>
<p></p>
9.Dilute Nitric acid reacts with Calcium hydroxide to form Calcium nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q14a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q14b> Ca(OH)<sub>2</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q14c> Ca(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q14d> H<sub>2</sub>O
<p style="font-size:115%; text-align:center;"><input onclick="check(14,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'HNO<sub>3</sub> + Ca(OH)<sub>2</sub>','Ca(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(14,'Reactions of Dilute nitric acid',1,1,1,1,0,0,'2HNO<sub>3</sub> + Ca(OH)<sub>2</sub>','Ca(NO<sub>3</sub>)<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer14">00:00</span>
<button type="button" onclick="startTimer('timer14')">Start</button>
<button type="button" onclick="stopTimer('timer14')">Stop</button>
<button type="button" onclick="resetTimer('timer14')">Reset Timer</button>
</p>
<p></p>
10.Dilute Nitric acid reacts with white Magnesium hydroxide to form colourless Magnesium nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q15a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q15b> Mg(OH)<sub>2</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q15c> Mg(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q15d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(15,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'HNO<sub>3</sub> + Mg(OH)<sub>2</sub>','Mg(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(15,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'2HNO<sub>3</sub> + Mg(OH)<sub>2</sub>','Mg(NO<sub>3</sub>)<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer15">00:00</span>
<button type="button" onclick="startTimer('timer15')">Start</button>
<button type="button" onclick="stopTimer('timer15')">Stop</button>
<button type="button" onclick="resetTimer('timer15')">Reset Timer</button>
</p>
<p></p>
11.Dilute Nitric acid reacts with white Aluminium hydroxide to form colourless Aluminium nitrate and water
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q16a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q16b> Al(OH)<sub>3</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q16c> Al(NO<sub>3</sub>)<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q16d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(16,'Reactions of Dilute nitric acid',3,1,1,3,0,0,'HNO<sub>3</sub> + Al(OH)<sub>3</sub>','Al(NO<sub>3</sub>)<sub>3</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(16,'Reactions of Dilute nitric acid',3,1,1,3,0,0,'3HNO<sub>3</sub> + Al(OH)<sub>3</sub>','Al(NO<sub>3</sub>)<sub>3</sub> + 3H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer16">00:00</span>
<button type="button" onclick="startTimer('timer16')">Start</button>
<button type="button" onclick="stopTimer('timer16')">Stop</button>
<button type="button" onclick="resetTimer('timer16')">Reset Timer</button>
</p>
<p></p>
12.Dilute Nitric acid reacts with white Zinc hydroxide to form colourless Zinc nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q17a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q17b> Zn(OH)<sub>2</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q17c> Zn(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q17d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(17,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'HNO<sub>3</sub> + Zn(OH)<sub>2</sub>','Zn(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(17,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'2HNO<sub>3</sub> + Zn(OH)<sub>2</sub>','Zn(NO<sub>3</sub>)<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer17">00:00</span>
<button type="button" onclick="startTimer('timer17')">Start</button>
<button type="button" onclick="stopTimer('timer17')">Stop</button>
<button type="button" onclick="resetTimer('timer17')">Reset Timer</button>
</p>
<p></p>
13.Dilute Nitric acid reacts with green Iron(II) hydroxide to form light green Iron(II) nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q18a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q18b> Fe(OH)<sub>2</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q18c> Fe(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q18d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(18,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'HNO<sub>3</sub> + Fe(OH)<sub>2</sub>','Fe(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(18,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'2HNO<sub>3</sub> + Fe(OH)<sub>2</sub>','Fe(NO<sub>3</sub>)<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer18">00:00</span>
<button type="button" onclick="startTimer('timer18')">Start</button>
<button type="button" onclick="stopTimer('timer18')">Stop</button>
<button type="button" onclick="resetTimer('timer18')">Reset Timer</button>
</p>
<p></p>
14.Dilute Nitric acid reacts with reddish brown Iron(III)hydroxide to form yellow Iron(III) nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q19a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q19b> Fe(OH)<sub>3</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q19c>
Fe(NO<sub>3</sub>)<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q19d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(19,'Reactions of Dilute nitric acid',3,1,1,3,0,0,'HNO<sub>3</sub> + Fe(OH)<sub>3</sub>','Fe(NO<sub>3</sub>)<sub>3</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(19,'Reactions of Dilute nitric acid',3,1,1,3,0,0,'3HNO<sub>3</sub> + Fe(OH)<sub>3</sub>','Fe(NO<sub>3</sub>)<sub>3</sub> + 3H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer19">00:00</span>
<button type="button" onclick="startTimer('timer19')">Start</button>
<button type="button" onclick="stopTimer('timer19')">Stop</button>
<button type="button" onclick="resetTimer('timer19')">Reset Timer</button>
</p>
<p></p>
15.Dilute Nitric acid reacts with white Lead(II)hydroxide to form colourless Lead(II)nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q20a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q20b> Pb(OH)<sub>2</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q20c> Pb(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q20d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(20,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'HNO<sub>3</sub> + Zn(OH)<sub>2</sub>','Pb(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(20,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'2HNO<sub>3</sub> + Pb(OH)<sub>2</sub>','Pb(NO<sub>3</sub>)<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer20">00:00</span>
<button type="button" onclick="startTimer('timer20')">Start</button>
<button type="button" onclick="stopTimer('timer20')">Stop</button>
<button type="button" onclick="resetTimer('timer20')">Reset Timer</button>
</p>
<p></p>
16.Dilute Nitric acid reacts with blue copper(II) hydroxide to form blue copper(II)nitrate and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q21a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q21b> Cu(OH)<sub>2</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q21c> Cu(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q21d> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(21,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'HNO<sub>3</sub> + Cu(OH)<sub>2</sub>','Cu(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(21,'Reactions of Dilute nitric acid',2,1,1,2,0,0,'2HNO<sub>3</sub> + Cu(OH)<sub>2</sub>','Cu(NO<sub>3</sub>)<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer21">00:00</span>
<button type="button" onclick="startTimer('timer21')">Start</button>
<button type="button" onclick="stopTimer('timer21')">Stop</button>
<button type="button" onclick="resetTimer('timer21')">Reset Timer</button>
</p>
<p></p>
17.Dilute Nitric acid reacts with Potassium carbonate to form Potassium nitrate, carbon dioxide and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q22a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q22b> K<sub>2</sub>CO<sub>3</sub> →<input style="font-size: 16px; text-align: center" size=1 name=q22c> KNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q22d> CO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q22e> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(22,'Reactions of Dilute nitric acid',2,1,2,1,1,0,'HNO<sub>3</sub> + K<sub>2</sub>CO<sub>3</sub>','KNO<sub>3</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(22,'Reactions of Dilute nitric acid',2,1,2,1,1,0,'2HNO<sub>3</sub> + K<sub>2</sub>CO<sub>3</sub>','2KNO<sub>3</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer22">00:00</span>
<button type="button" onclick="startTimer('timer22')">Start</button>
<button type="button" onclick="stopTimer('timer22')">Stop</button>
<button type="button" onclick="resetTimer('timer22')">Reset Timer</button>
</p>
<p></p>
18.Dilute Nitric acid reacts with Sodium carbonate to form Sodium nitrate, carbon dioxide and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q23a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q23b> Na<sub>2</sub>CO<sub>3</sub>→<input style="font-size: 16px; text-align: center;" size=1 name=q23c>NaNO<sub>3</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q23d> CO<sub>2</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q23e>H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(23,'Reactions of Dilute nitric acid',2,1,2,1,1,0,'HNO<sub>3</sub> + Na<sub>2</sub>CO<sub>3</sub>','NaNO<sub>3</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(23,'Reactions of Dilute nitric acid',2,1,2,1,1,0,'2HNO<sub>3</sub> + Na<sub>2</sub>CO<sub>3</sub>','2NaNO<sub>3</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer23">00:00</span>
<button type="button" onclick="startTimer('timer23')">Start</button>
<button type="button" onclick="stopTimer('timer23')">Stop</button>
<button type="button" onclick="resetTimer('timer23')">Reset Timer</button>
</p>
<p></p>
18.Dilute Nitric acid reacts with white Calcium carbonate to form Calcium nitrate, carbon dioxide and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q24a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q24b> CaCO<sub>3</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q24c> Ca(NO<sub>3</sub>)<sub>2</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q24d>CO<sub>2</sub> +<input style="font-size: 16px; text-align: center" size=1 name=q24e>H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(24,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'HNO<sub>3</sub> + CaCO<sub>3</sub>','Ca(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(24,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'2HNO<sub>3</sub> + CaCO<sub>3</sub>','Ca(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer24">00:00</span>
<button type="button" onclick="startTimer('timer24')">Start</button>
<button type="button" onclick="stopTimer('timer24')">Stop</button>
<button type="button" onclick="resetTimer('timer24')">Reset Timer</button>
</p>
<p></p>
19.Dilute Nitric acid reacts with white Magnesium carbonate to form Magnesium nitrate, carbon dioxide and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q25a> HNO<sub>3</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q25b> MgCO<sub>3</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q25c> Mg(NO<sub>3</sub>)<sub>2</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q25d>CO<sub>2</sub> +<input style="font-size: 16px; text-align: center" size=1 name=q25e>H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(25,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'HNO<sub>3</sub> + CaCO<sub>3</sub>','Mg(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(25,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'2HNO<sub>3</sub> + MgCO<sub>3</sub>','Mg(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer25">00:00</span>
<button type="button" onclick="startTimer('timer25')">Start</button>
<button type="button" onclick="stopTimer('timer25')">Stop</button>
<button type="button" onclick="resetTimer('timer25')">Reset Timer</button>
</p>
<p></p>
20.Dilute Nitric acid reacts with white Zinc carbonate to form Calcium nitrate, carbon dioxide and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q26a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q26b> ZnCO<sub>3</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q26c> Zn(NO<sub>3</sub>)<sub>2</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q26d>CO<sub>2</sub> +<input style="font-size: 16px; text-align: center" size=1 name=q26e>H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(26,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'HNO<sub>3</sub> + ZnCO<sub>3</sub>','Zn(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(26,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'2HNO<sub>3</sub> + ZnCO<sub>3</sub>','Zn(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer26">00:00</span>
<button type="button" onclick="startTimer('timer26')">Start</button>
<button type="button" onclick="stopTimer('timer26')">Stop</button>
<button type="button" onclick="resetTimer('timer26')">Reset Timer</button>
</p>
<p></p>
21.Dilute Nitric acid reacts with white Lead(II) carbonate to form Calcium nitrate, carbon dioxide and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q27a>HNO<sub>3</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q27b> PbCO<sub>3</sub>→<input style="font-size: 16px; text-align: center;" size=1 name=q27c> Pb(NO<sub>3</sub>)<sub>2</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q27d>CO<sub>2</sub> +<input style="font-size: 16px; text-align: center" size=1 name=q27e>H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(27,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'HNO<sub>3</sub> + PbCO<sub>3</sub>','Pb(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(27,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'2HNO<sub>3</sub> + PbCO<sub>3</sub>','Pb(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer27">00:00</span>
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<p></p>
22.Dilute Nitric acid reacts with green Copper (II) carbonate to form blue Copper (II) nitrate, carbon dioxide and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q28a> HNO<sub>3</sub>+<input style="font-size: 16px; text-align: center;" size=1 name=q28b> CuCO<sub>3</sub> →<input style="font-size: 16px; text-align: center;" size=1 name=q28c> Cu(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q28d>CO<sub>2</sub> +<input style="font-size: 16px; text-align: center" size=1 name=q28e>H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(28,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'HNO<sub>3</sub> + CuCO<sub>3</sub>','Cu(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(28,'Reactions of Dilute nitric acid',2,1,1,1,1,0,'2HNO<sub>3</sub> + CuCO<sub>3</sub>','Cu(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer28">00:00</span>
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</p>
<p></p>
23.Dilute Nitric acid oxidizes Copper metal to form Copper (II) nitrate, Nitrogen monoxide (Nitric oxide)gas and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q29a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q29b> Cu → <input style="font-size: 16px; text-align: center" size=1 name=q29c> Cu(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q29d> NO + <input style="font-size: 16px; text-align: center;" size=1 name=q29e> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(29,'Reactions of Dilute nitric acid',8,3,3,2,4,0,'HNO<sub>3</sub> + Cu','Cu(NO<sub>3</sub>)<sub>2</sub> + NO + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(29,'Reactions of Dilute nitric acid',8,3,3,2,4,0,'8HNO<sub>3</sub> + 3Cu','3Cu(NO<sub>3</sub>)<sub>2</sub> + 2NO + 4H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer29">00:00</span>
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<p></p>
<h4>Reactions of concentrated Nitric acid (As an oxidizing agent):</h4>
<p></p>
1. Concentrated Nitric acid reacts with Copper metal to form Copper(II)nitrate, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour, and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q30a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q30b> Cu → <input style="font-size: 16px; text-align: center" size=1 name=q30c> Cu(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q30d> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q30e> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(30,'Reactions of Concentrated nitric acid',4,1,1,2,2,0,'HNO<sub>3</sub> + Cu','Cu(NO<sub>3</sub>)<sub>2</sub> + NO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(30,'Reactions of Concentrated nitric acid',4,1,1,2,2,0,'4HNO<sub>3</sub> + Cu','Cu(NO<sub>3</sub>)<sub>2</sub> + 2NO<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer30">00:00</span>
<button type="button" onclick="startTimer('timer30')">Start</button>
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<button type="button" onclick="resetTimer('timer30')">Reset Timer</button>
</p>
<p></p>
2.Concentrated Nitric acid reacts with Carbon to form carbon dioxide gas, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour, and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q31a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q31b> C → <input style="font-size: 16px; text-align: center" size=1 name=q31c> CO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q31d> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q31e> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(31,'Reactions of Concentrated nitric acid',4,1,1,4,2,0,'HNO<sub>3</sub> + C','CO<sub>2</sub> + NO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(31,'Reactions of Concentrated nitric acid',4,1,1,4,2,0,'4HNO<sub>3</sub> + C','CO<sub>2</sub> + 4NO<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer31">00:00</span>
<button type="button" onclick="startTimer('timer31')">Start</button>
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</p>
<p></p>
3.Concentrated Nitric acid reacts with Sulphur to form Sulphuric acid, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour, and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q32a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q32b> S → <input style="font-size: 16px; text-align: center" size=1 name=q32c> H<sub>2</sub>SO<sub>4</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q32d> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q32e> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(32,'Reactions of Concentrated nitric acid',6,1,1,6,2,0,'HNO<sub>3</sub> + S','H<sub>2</sub>SO<sub>4</sub> + NO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(32,'Reactions of Concentrated nitric acid',6,1,1,6,2,0,'6HNO<sub>3</sub> + S','H<sub>2</sub>SO<sub>4</sub> + 6NO<sub>2</sub> + 2H<sub>2</sub>O');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer32">00:00</span>
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<button type="button" onclick="resetTimer('timer32')">Reset Timer</button>
</p>
<p></p>
<h4>Effect of heat on metal Nitrates:</h4>
<p></p>
1. When Potassium nitrate is heated strongly it decomposes to form Potassium nitrite and Oxygen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q33a> KNO<sub>3</sub> → <input style="font-size: 16px; text-align: center;" size=1 name=q33b> KNO<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q33c> O<sub>2</sub> </p>
<p style="font-size:115%; text-align:center;"><input onclick="check(33,'Effect of heat on Metal nitrates',2,2,1,0,0,0,'KNO<sub>3</sub> ','KNO<sub>2</sub> + O<sub>2</sub> ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(33,'Effect of heat on Metal nitrates',2,2,1,0,0,0,'2KNO<sub>3</sub>','2KNO<sub>2</sub> + O<sub>2</sub>') ;" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer33">00:00</span>
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<button type="button" onclick="resetTimer('timer33')">Reset Timer</button>
</p>
<p></p>
2. When Sodium nitrate is heated strongly it decomposes to form Sodium nitrite and Oxygen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q34a> NaNO<sub>3</sub> → <input style="font-size: 16px; text-align: center;" size=1 name=q34b> NaNO<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q34c> O<sub>2</sub> </p>
<p style="font-size:115%; text-align:center;"><input onclick="check(34,'Effect of heat on Metal nitrates',2,2,1,0,0,0,'NaNO<sub>3</sub> ','NaNO<sub>2</sub> + O<sub>2</sub> ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(34,'Effect of heat on Metal nitrates',2,2,1,0,0,0,'2NaNO<sub>3</sub>','2NaNO<sub>2</sub> + O<sub>2</sub>') ;" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer34">00:00</span>
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<button type="button" onclick="resetTimer('timer34')">Reset Timer</button>
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<p></p>
3. When Calcium nitrate is heated strongly it decomposes to form white Calcium oxide, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour and Oxygen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q35a> Ca(NO<sub>3</sub>)<sub>2</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q35b> CaO + <input style="font-size: 16px; text-align: center;" size=1 name=q35c> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q35d> O<sub>2</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(35,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'Ca(NO<sub>3</sub>)<sub>2</sub> ','CaO + NO<sub>2</sub> + O<sub>2</sub> ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(35,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'2Ca(NO<sub>3</sub>)<sub>2</sub>','2CaO + 4NO<sub>2</sub> + O<sub>2</sub>') ;" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer35">00:00</span>
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</p>
<p></p>
4. When Magnesium nitrate is heated strongly it decomposes to form white Magnesium oxide, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour and Oxygen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q36a>Mg(NO<sub>3</sub>)<sub>2</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q36b> MgO + <input style="font-size: 16px; text-align: center;" size=1 name=q36c> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q36d> O<sub>2</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(36,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'Mg(NO<sub>3</sub>)<sub>2</sub> ','MgO + NO<sub>2</sub> + O<sub>2</sub> ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(36,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'2Mg(NO<sub>3</sub>)<sub>2</sub>','2MgO + 4NO<sub>2</sub> + O<sub>2</sub>') ;" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer36">00:00</span>
<button type="button" onclick="startTimer('timer36')">Start</button>
<button type="button" onclick="stopTimer('timer36')">Stop</button>
<button type="button" onclick="resetTimer('timer36')">Reset Timer</button>
</p>
<p></p>
5. When Aluminium nitrate is heated strongly it decomposes to form white Aluminium oxide, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour and Oxygen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q37a> Al(NO<sub>3</sub>)<sub>3</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q37b> Al<sub>2</sub>O<sub>3</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q37c> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q37d> O<sub>2</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(37,'Effect of heat on Metal nitrates',4,2,12,3,0,0,'Al(NO<sub>3</sub>)<sub>3</sub>','Al<sub>2</sub>O<sub>3</sub> + NO<sub>2</sub> + O<sub>2</sub> ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(37,'Effect of heat on Metal nitrates',4,2,12,3,0,0,'4Al(NO<sub>3</sub>)<sub>3</sub>','2Al<sub>2</sub>O<sub>3</sub>+ 12NO<sub>2</sub> + 3O<sub>2</sub>') ;" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer37">00:00</span>
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<button type="button" onclick="resetTimer('timer37')">Reset Timer</button>
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<p></p>
6. When Zinc nitrate is heated strongly it decomposes to form zinc oxide which is yellow when hot and white when cold, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour and Oxygen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q38a>Zn(NO<sub>3</sub>)<sub>2</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q38b> ZnO + <input style="font-size: 16px; text-align: center;" size=1 name=q38c> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q38d> O<sub>2</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(38,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'Zn(NO<sub>3</sub>)<sub>2</sub> ','ZnO + NO<sub>2</sub> + O<sub>2</sub> ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(38,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'2Zn(NO<sub>3</sub>)<sub>2</sub>','2ZnO + 4NO<sub>2</sub> + O<sub>2</sub>') ;" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer38">00:00</span>
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<button type="button" onclick="resetTimer('timer38')">Reset Timer</button>
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<p></p>
7. When Lead(II) nitrate is heated strongly it decomposes to form yellow Lead(II)oxide, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour and Oxygen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q39a> Pb(NO<sub>3</sub>)<sub>2</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q39b> PbO + <input style="font-size: 16px; text-align: center;" size=1 name=q39c> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q39d> O<sub>2</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(39,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'Pb(NO<sub>3</sub>)<sub>2</sub> ','PbO + NO<sub>2</sub> + O<sub>2</sub> ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(39,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'2Pb(NO<sub>3</sub>)<sub>2</sub>','2PbO + 4NO<sub>2</sub> + O<sub>2</sub>') ;" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer39">00:00</span>
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<button type="button" onclick="resetTimer('timer39')">Reset Timer</button>
</p>
<p></p>
8. When blue Copper(II) nitrate is heated strongly it decomposes to form black Copper(II)oxide, Nitrogen dioxide gas which is acidic, pungent smelling and reddish brown in colour and Oxygen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q40a>Cu(NO<sub>3</sub>)<sub>2</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q40b> CuO + <input style="font-size: 16px; text-align: center;" size=1 name=q40c> NO<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q40d> O<sub>2</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(40,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'Cu(NO<sub>3</sub>)<sub>2</sub> ','CuO + NO<sub>2</sub> + O<sub>2</sub> ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(40,'Effect of heat on Metal nitrates',2,2,4,1,0,0,'2Cu(NO<sub>3</sub>)<sub>2</sub>','2CuO + 4NO<sub>2</sub> + O<sub>2</sub>') ;" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
<span style="color:blue;"><b>Time Taken:</b></span><span class="timer" id="timer40">00:00</span>
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9. When Ammonium nitrate is heated strongly it decomposes to form Nitrous oxide (Laughing gas)and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q41a> NH<sub>4</sub>NO<sub>3</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q41b> N<sub>2</sub>O + <input style="font-size: 16px; text-align: center;" size=1 name=q41c> H<sub>2</sub>O
<p style="font-size:115%; text-align:center;"><input onclick="check(41,'Effect of heat on Metal nitrates',1,1,2,0,0,0,'NH<sub>4</sub>NO<sub>3</sub> ','N<sub>2</sub>O + H<sub>2</sub>O ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(41,'Effect of heat on Metal nitrates',1,1,2,0,0,0,'NH<sub>4</sub>NO<sub>3</sub>','N<sub>2</sub>O + 2H<sub>2</sub>O') ;" type="button" value="Show answer"> </p>
<p></p><p style="font-size:115%; text-align:center;">
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10. When Ammonium nitrite is heated strongly it explodes to form nitrogen and water:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center;"
size=1 name=q42a> NH<sub>4</sub>NO<sub>2</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q42b> N<sub>2</sub> + <input style="font-size: 16px; text-align: center;" size=1 name=q42c> H<sub>2</sub>O
<p style="font-size:115%; text-align:center;"><input onclick="check(42,'Effect of heat on Metal nitrates',1,1,2,0,0,0,'NH<sub>4</sub>NO<sub>3</sub> ','N<sub>2</sub> + H<sub>2</sub>O ');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(42,'Effect of heat on Metal nitrates',1,1,2,0,0,0,'NH<sub>4</sub>NO<sub>3</sub>','N<sub>2</sub> + 2H<sub>2</sub>O') ;" type="button" value="Show answer"> </p>
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