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ammonia.html
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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>Ammonia</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">
<link rel="stylesheet" href="mystyle.css">
</head>
<body>
<div>
<img src="myPhoto.jpg" alt="webmaster" width="150" height="200"> <br> <a href="mailto:jibanmajumdar@gmail.com">webmaster</a>
</div>
<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="nitric-acid.html">Nitric Acid</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;">Ammonia</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>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 Ammonia:</h4>
1.When Ammonium Chloride is heated with slaked lime (Calcium hydroxide),Ammonia gas is formed:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align:center"
size=1 name=q1a> NH<sub>4</sub>Cl + <input style="font-size: 16px; text-align:center" size=1 name=q1b> Ca(OH)<sub>2</sub>→<input style="font-size: 16px; text-align: center" size=1 name=q1c> CaCl<sub>2</sub>+ <input style="font-size:16px;text-align:center" size=1 name=q1d>NH<sub>3</sub> + <input style="font-size:16px;text-align:center" size=1 name=q1e>H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;">
<input onclick="check(1,'Preparation of Ammonia',2,1,1,2,2,0,'NH<sub>4</sub>Cl + Ca(OH)<sub>2</sub>','CaCl<sub>2</sub> + NH<sub>3</sub>+H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(1,'Preparation of Ammonia',2,1,1,2,2,0,'2NH<sub>4</sub>Cl + Ca(OH)<sub>2</sub>','CaCl<sub>2</sub>+2NH<sub>3</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="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 Magnesium nitride is added to water, Ammonia gas is formed:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q2a> Mg<sub>3</sub>N<sub>2</sub> + <input style="font-size: 16px; text-align:center" size=1 name=q2b> H<sub>2</sub>O → <input style="font-size: 16px; text-align: center" size=1 name=q2c> Mg(OH)<sub>2</sub> + <input style="font-size:16px;text-align:center" size=1 name=q2d> NH<sub>3</sub></p>
<p style="font-size:115%; text-align:center;">
<input onclick="check(2,'Preparation of Ammonia',1,6,3,2,0,0,'Mg<sub>3</sub>N<sub>2</sub> + H<sub>2</sub>O','Mg(OH)<sub>2</sub> + NH<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(2,'Preparation of Ammonia',1,6,3,2,0,0,'Mg<sub>3</sub>N<sub>2</sub> + 6 H<sub>2</sub>O','3Mg(OH)<sub>2</sub> + 2NH<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>
3.When Aluminium nitride is added to water, Ammonia gas is formed:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q3a> AlN + <input style="font-size: 16px; text-align:center" size=1 name=q3b> H<sub>2</sub>O → <input style="font-size: 16px; text-align: center" size=1 name=q3c> Al(OH)<sub>3</sub> + <input style="font-size:16px;text-align:center" size=1 name=q3d> NH<sub>3</sub></p>
<p style="font-size:115%; text-align:center;">
<input onclick="check(3,'Preparation of Ammonia',1,3,1,1,0,0,'AlN + H<sub>2</sub> O','Al(OH)<sub>3</sub> + NH<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(3,'Preparation of Ammonia',1,3,1,1,0,0,'AlN + 3 H<sub>2</sub> O','Al(OH)<sub>3</sub> + NH<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="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>
4.When A mixture of Nitrogen gas and Hydrogen gas is passed over Iron catalyst at 200 atm pressure and 450<sup>o</sup>C, Ammonia gas is formed (Haber Process):
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q4a> N<sub>2</sub> + <input style="font-size: 16px; text-align:center" size=1 name=q4b> H<sub>2</sub> ⇌ <input style="font-size: 16px; text-align: center" size=1 name=q4c> NH<sub>3</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(4,'Preparation of Ammonia',1,3,2,0,0,0,'N<sub>2</sub> + H<sub>2</sub>','NH<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(4,'Preparation of Ammonia',1,3,2,0,0,0,'N<sub>2</sub> + 3H<sub>2</sub>','2NH<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="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>
<h3>Reactions of Ammonia:</h3>
1. Ammonia reacts with Hydrogen Chloride gas to form white fumes of Ammonium chloride:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q5a> HCl + <input style="font-size: 16px; text-align: center" size=1 name=q5b> NH<sub>3</sub>→<input style="font-size: 16px; text-align: center" size=1 name=q5c> NH<sub>4</sub>Cl </p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(5,'Reactions of Ammonia',1,1,1,0,0,0,'HCl + NH<sub>3</sub>','NH<sub>4</sub>Cl');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(5,'Reactions of Ammonia',1,1,1,0,0,0,'HCl+ NH<sub>3</sub>','NH<sub>4</sub>Cl');" 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>
<p></p>
2. Ammonia reacts with Nitric acid to form Ammonium nitrate:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q6a> HNO<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q6b> NH<sub>3</sub>→<input style="font-size: 16px; text-align: center" size=1 name=q6c> NH<sub>4</sub>NO<sub>3</sub> </p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(6,'Reactions of Ammonia',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(6,'Reactions of Ammonia',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="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>
3. Ammonia reacts with Sulphuric acid to form Ammonium sulphate:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q7a> H<sub>2</sub>SO<sub>4</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>)<sub>2</sub>SO<sub>4</sub> </p>
<p style="font-size:115%; text-align:center;"> <input onclick="check(7,'Reactions of Ammonia',1,2,1,0,0,0,'H<sub>2</sub>SO<sub>4</sub> + NH<sub>3</sub>','(NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(7,'Reactions of Ammonia',1,2,1,0,0,0,'H<sub>2</sub>SO<sub>4</sub>+ 2NH<sub>3</sub>','(NH<sub>4</sub>)<sub>2</sub>SO<sub>4</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>
4.Ammonia burns in oxygen to form Nitrogen gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q8a> NH<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q8b> O<sub>2</sub>→<input style="font-size: 16px; text-align: center" size=1 name=q8c> N<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q8d> H<sub>2</sub>O </p>
<p style="font-size:115%; text-align:center;"><input onclick="check(8,'Reactions of Ammonia',4,3,2,6,0,0,'NH<sub>3</sub> + O<sub>2</sub>','N<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(8,'Reactions of Ammonia',4,3,2,6,0,0,'4NH<sub>3</sub> + 3O<sub>2</sub>','2N<sub>2</sub> + 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="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>
5.Ammonia reduces black copper(II)oxide into brown copper metal:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q9a> NH<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q9b> CuO →<input style="font-size: 16px; text-align: center" size=1 name=q9c> N<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q9d> Cu + <input style="font-size: 16px; text-align: center" size=1 name=q9e> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(9,'Reactions of Ammonia',2,3,1,3,3,0,'NH<sub>3</sub> + CuO<sub>2</sub>','N<sub>2</sub> + Cu + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(9,'Reactions of Ammonia',2,3,1,3,3,0,'2NH<sub>3</sub> + 3CuO','N<sub>2</sub> + 3Cu + 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="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>
6.Ammonia reduces yellow lead(II)oxide into grey lead metal:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q10a> NH<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q10b> PbO →<input style="font-size: 16px; text-align: center" size=1 name=q10c> N<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q10d> Pb + <input style="font-size: 16px; text-align: center" size=1 name=q10e> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(10,'Reactions of Ammonia',2,3,1,3,3,0,'NH<sub>3</sub> + PbO<sub>2</sub>','N<sub>2</sub> + Pb + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(10,'Reactions of Ammonia',2,3,1,3,3,0,'2NH<sub>3</sub> + 3PbO','N<sub>2</sub> + 3Pb + 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="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>
7.Excess Ammonia reacts with Chlorine gas to form white fumes of Ammonium chloride:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q11a> NH<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q11b> Cl<sub>2</sub>→ <input style="font-size: 16px; text-align: center" size=1 name=q11c> N<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q11d> NH<sub>4</sub>Cl</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(11,'Reactions of Ammonia',8,3,1,6,0,0,'NH<sub>3</sub> + Cl<sub>2</sub>','N<sub>2</sub> + NH<sub>4</sub>Cl');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(11,'Reactions of Ammonia',8,3,1,6,0,0,'8NH<sub>3</sub> + 3Cl<sub>2</sub>','N<sub>2</sub> + 6NH<sub>4</sub>Cl');" 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>
8.Excess Chlorine reacts with Ammonia gas to form misty fumes of Hydrogen chloride:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q12a> NH<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q12b> Cl<sub>2</sub> →<input style="font-size: 16px; text-align: center" size=1 name=q12c> NCl<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q12d> HCl</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(12,'Reactions of Ammonia',1,3,1,3,0,0,'NH<sub>3</sub> + Cl<sub>2</sub>','NCl<sub>3</sub> + HCl');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(12,'Reactions of Ammonia',1,3,1,3,0,0,'NH<sub>3</sub> + 3Cl<sub>2</sub>','NCl<sub>3</sub> + 3HCl');" 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>
9. When a mixture of Ammonia and air is passed over hot platinum catalyst, Ammonia reacts with oxygen of air to form nirogen monoxide gas:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q13a> NH<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q13b> O<sub>2</sub> ⇌ <input style="font-size: 16px; text-align: center" size=1 name=q13c> NO + <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 Ammonia',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(13,'Reactions of Ammonia',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>
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<h3>Reactions of aqueous Ammonia(Ammonium Hydroxide):</h3>
1. When aqueous Ammonia is added to a solution of Lead(II)nitrate, a white precipitate of Lead(II)hydroxide is formed.This precipitate is insoluble in excess aqueous ammonia:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q14a> NH<sub>4</sub>OH + <input style="font-size: 16px; text-align: center" size=1 name=q14b> Pb(NO<sub>3</sub>)<sub>2</sub> →<input style="font-size: 16px; text-align: center" size=1 name=q14c> Pb(OH)<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q14d> NH<sub>4</sub>NO<sub>3</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(14,'Reactions of aqueous Ammonia',2,1,1,2,0,0,'NH<sub>4</sub>OH + Pb(NO<sub>3</sub>)<sub>2</sub>','Pb(OH)<sub>2</sub> + NH<sub>4</sub>NO<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(14,'Reactions of aqueous Ammonia',2,1,1,2,0,0,'2NH<sub>4</sub>OH + Pb(NO<sub>3</sub>)<sub>2</sub>','Pb(OH)<sub>2</sub> + 2NH<sub>4</sub>NO<sub>3</sub>');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
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2. When aqueous Ammonia is added to a solution of Iron(II)sulphate, a green precipitate of Iron(II)hydroxide is formed.This precipitate is insoluble in excess aqueous ammonia:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q15a> NH<sub>4</sub>OH + <input style="font-size: 16px; text-align: center" size=1 name=q15b> FeSO<sub>4</sub>→ <input style="font-size: 16px; text-align: center" size=1 name=q15c> Fe(OH)<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q15d> (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(15,'Reactions of aqueous Ammonia',2,1,1,1,0,0,'NH<sub>4</sub>OH + FeSO<sub>4</sub>','Fe(OH)<sub>2</sub> + (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(15,'Reactions of aqueous Ammonia',2,1,1,1,0,0,'2NH<sub>4</sub>OH + FeSO<sub>4</sub>','Fe(OH)<sub>2</sub> + (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
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3. When aqueous Ammonia is added to a solution of Iron(III)chloride, a reddish brown precipitate of Iron(III)hydroxide is formed.This precipitate is insoluble in excess aqueous ammonia:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q16a> NH<sub>4</sub>OH + <input style="font-size: 16px; text-align: center" size=1 name=q16b> FeCl<sub>3</sub>→ <input style="font-size: 16px; text-align: center" size=1 name=q16c> Fe(OH)<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q16d> NH<sub>4</sub>Cl</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(16,'Reactions of aqueous Ammonia',3,1,1,3,0,0,'NH<sub>4</sub>OH + FeCl<sub>3</sub>','Fe(OH)<sub>3</sub> + NH<sub>4</sub>Cl');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(16,'Reactions of aqueous Ammonia',3,1,1,3,0,0,'3NH<sub>4</sub>OH + FeCl<sub>3</sub>','Fe(OH)<sub>3</sub> + 3NH<sub>4</sub>Cl');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
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<p></p>
4. When aqueous Ammonia is added to a solution of Aluminium chloride, a white gelatinous precipitate of Aluminium hydroxide is formed.This precipitate is insoluble in excess aqueous ammonia:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q17a> NH<sub>4</sub>OH + <input style="font-size: 16px; text-align: center" size=1 name=q17b> AlCl<sub>3</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q17c> Al(OH)<sub>3</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q17d> NH<sub>4</sub>Cl</p>
<p style="font-size:115%; text-align:center;"><input onclick="check(17,'Reactions of aqueous Ammonia',3,1,1,3,0,0,'NH<sub>4</sub>OH + AlCl<sub>3</sub>','Al(OH)<sub>3</sub> + NH<sub>4</sub>)Cl');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(17,'Reactions of aqueous Ammonia',3,1,1,3,0,0,'3NH<sub>4</sub>OH + AlCl<sub>3</sub>','Al(OH)<sub>3</sub> + 3NH<sub>4</sub>Cl');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
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<p></p>
5. When aqueous Ammonia is added to a solution of Copper(II)sulphate, a blue precipitate of Copper(II)hydroxide is formed.This precipitate dissolves in excess aqueous ammonia to form a deep blue solution:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q18a> NH<sub>4</sub>OH + <input style="font-size: 16px; text-align: center" size=1 name=q18b> CuSO<sub>4</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q18c> Cu(OH)<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q18d> (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(18,'Reactions of aqueous Ammonia',2,1,1,1,0,0,'NH<sub>4</sub>OH + CuSO<sub>4</sub>','Cu(OH)<sub>2</sub> + (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(18,'Reactions of aqueous Ammonia',2,1,1,1,0,0,'2NH<sub>4</sub>OH + CuSO<sub>4</sub>','Cu(OH)<sub>2</sub> + (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>');" type="button" value="Show answer"> </p>
<p style="font-size:115%; text-align:center;">
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<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q19a> Cu(OH)<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q19b> NH<sub>3</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q19c> Cu(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup> + <input style="font-size: 16px; text-align: center" size=1 name=q19d> OH<sup>-</sup></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(19,'Reactions of aqueous Ammonia',1,4,1,2,0,0,'Cu(OH)<sub>2</sub> + NH<sub>3</sub>','Cu(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup> + OH<sup>-</sup>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(19,'Reactions of aqueous Ammonia',1,4,1,2,0,0,'Cu(OH)<sub>2</sub> + 4NH<sub>3</sub>','Cu(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup> + 2OH<sup>-</sup>');" type="button" value="Show answer"> </p>
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6. When aqueous Ammonia is added to a solution of Zinc sulphate, a white gelatinous precipitate of Zinc hydroxide is formed.This precipitate dissolves in excess aqueous ammonia to form a colourless solution:
<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q20a> NH<sub>4</sub>OH + <input style="font-size: 16px; text-align: center" size=1 name=q20b> ZnSO<sub>4</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q20c> Zn(OH)<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q20d> (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(20,'Reactions of aqueous Ammonia',2,1,1,1,0,0,'NH<sub>4</sub>OH + ZnSO<sub>4</sub>','Zn(OH)<sub>2</sub> + (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(20,'Reactions of aqueous Ammonia',2,1,1,1,0,0,'2NH<sub>4</sub>OH + ZnSO<sub>4</sub>','Zn(OH)<sub>2</sub> + (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>');" type="button" value="Show answer"> </p>
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<p style="font-size:115%; text-align:center;"><input style="font-size: 16px; text-align: center"
size=1 name=q21a> Zn(OH)<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q21b> NH<sub>3</sub> → <input style="font-size: 16px; text-align: center" size=1 name=q21c> Zn(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup> + <input style="font-size: 16px; text-align: center" size=1 name=q21d> OH<sup>-</sup></p>
<p style="font-size:115%; text-align:center;"><input onclick="check(21,'Reactions of aqueous Ammonia',1,4,1,2,0,0,'Zn(OH)<sub>2</sub> + NH<sub>3</sub>','Zn(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup> + OH<sup>-</sup>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(21,'Reactions of aqueous Ammonia',1,4,1,2,0,0,'Zn(OH)<sub>2</sub> + 4NH<sub>3</sub>','Zn(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup> + 2OH<sup>-</sup>');" type="button" value="Show answer"> </p>
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