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assorted.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>Assorted Equations</title>
<script src="chem1.js" defer></script>
<script src="timer.js" defer></script>
<meta name="Keywords" content="exercises, balancing,inorganic, chemistry, equations, fluorine,ozone,potassium-dichromate, potassium permanganate, 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="advanced.html">Advanced Equations</a></td>
<td><a href="equations.html">Intermediate Equations</a></td>
<td><a href="fluorine.html">Fluorine</a></td>
<td><a href="ozone.html">Ozone</a></td>
<td><a href="potassium-dichromate.html">Potassium Dichromate</a></td>
<td><a href="potassium-permanganate.html">Potassium Permanganate</a></td>
</tr>
</table>
<h1 style="text-align:center;">Assorted Equations</h1>
<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>
<p></p>
<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.
<p></p>
<form name="equations">
<b>Equation 1.</b> <p style="font-size:115%; text-align: center;"><input style="font-size:16px; text-align: center"
size=1 name=q1a>Al<sub>2</sub>O<sub>3</sub> + <input style="font-size:16px; text-align:center" size=1 name=q1b>C + <input style="font-size:16px; text-align:center" size=1 name=q1c> Cl<sub>2</sub> → <input style="font-size:16px; text-align: center" size=1 name=q1d> AlCl<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q1e>CO</p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(1,'Assorted Equations',1,3,3,2,3,0,'Al<sub>2</sub>O<sub>3</sub> + C + Cl<sub>2</sub>','AlCl<sub>3</sub> + CO');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(1,'Assorted Equations',1,3,3,2,3,0,'Al<sub>2</sub>O<sub>3</sub> + 3C + 3Cl<sub>2</sub>','2AlCl<sub>3</sub> + 3CO');" 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>
<p ></p>
<b>Equation 2.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q2a> Cu + <input style="font-size: 16px; text-align:center" size=1 name=q2b> FeCl<sub>3</sub> → <input style="font-size: 16px;text-align: center" size=1 name=q2c> FeCl<sub>2</sub>+ <input style="font-size: 16px;text-align:center" size=1 name=q2d> CuCl<sub>2</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(2,'Assorted Equations',1,2,2,1,0,0,'Cu + FeCl<sub>3</sub>','FeCl<sub>2</sub> + CuCl<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(2,'Assorted Equations',1,2,2,1,0,0,'Cu + 2FeCl<sub>3</sub>','2FeCl<sub>2</sub> + CuCl<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="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>
<b>Equation 3.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q3a> Pb + <input style="font-size: 16px;text-align:center" size=1 name=q3b> CH<sub>3</sub>COOH + <input style="font-size: 16px;text-align:center" size=1 name=q3c> O<sub>2</sub> → <input style="font-size: 16px;text-align: center" size=1 name=q3d> Pb(CH<sub>3</sub>COO)<sub>2</sub> + <input style="font-size:16px;text-align:center" size=1 name=q3e> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(3,'Assorted Equations',2,4,1,2,2,0,'Pb + CH<sub>3</sub>COOH + O<sub>2</sub>','Pb(CH<sub>3</sub>COO)<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(3,'Assorted Equations',2,4,1,2,2,0,'2Pb + 4CH<sub>3</sub>COOH + O<sub>2</sub>','2Pb(CH<sub>3</sub>COO)<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="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>
<b>Equation 4.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q4a> Sn + <input style="font-size: 16px;text-align:center" size=1 name=q4b> HNO<sub>3</sub>(dil.) → <input style="font-size: 16px;text-align: center" size=1 name=q4c> Sn(NO<sub>3</sub>)<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q4d> H<sub>2</sub>O + <input style="font-size:16px;text-align:center" size=1 name=q4e> NH<sub>4</sub>NO<sub>3</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(4,'Assorted Equations',4,10,4,3,1,0,'Sn + HNO<sub>3</sub>(dil.)','Sn(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O +NH<sub>4</sub>NO<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(4,'Assorted Equations',4,10,4,3,1,0,'4Sn + 10HNO<sub>3</sub>(dil.)','4Sn(NO<sub>3</sub>)<sub>2</sub> + 3H<sub>2</sub>O +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="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>
<b>Equation 5.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q5a> Sn + <input style="font-size: 16px;text-align:center" size=1 name=q5b> HNO<sub>3</sub>(conc.) → <input style="font-size: 16px;text-align: center" size=1 name=q5c> H<sub>2</sub>SnO<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q5d> H<sub>2</sub>O + <input style="font-size: 16px;text-align:center" size=1 name=q5e> NO<sub>2</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(5,'Assorted Equations',1,4,1,1,4,0,'Sn + HNO<sub>3</sub>(conc.)','H<sub>2</sub>SnO<sub>3</sub> + H<sub>2</sub>O +NO<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(5,'Assorted Equations',1,4,1,1,4,0,'Sn + 4HNO<sub>3</sub>(conc.)','H<sub>2</sub>SnO<sub>3</sub> + H<sub>2</sub>O + 4NO<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="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>
<b>Equation 6.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q6a> Sn + <input style="font-size: 16px;text-align:center" size=1 name=q6b> NaOH+ <input style="font-size: 16px;text-align:center" size=1 name=q6c> H<sub>2</sub>O → <input style="font-size: 16px;text-align: center" size=1 name=q6d> Na<sub>2</sub>SnO<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q6e> H<sub>2</sub></p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(6,'Assorted Equations',1,2,1,1,2,0,'Sn + NaOH + H<sub>2</sub>O','Na<sub>2</sub>SnO<sub>2</sub> + H<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(6,'Assorted Equations',1,2,1,1,2,0,'Sn + 2NaOH + H<sub>2</sub>O','Na<sub>2</sub>SnO<sub>2</sub> + 2H<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>
<b>Equation 7.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q7a> Ag + <input style="font-size: 16px;text-align:center" size=1 name=q7b> KCN + <input style="font-size: 16px;text-align:center" size=1 name=q7c> O<sub>2</sub> + <input style="font-size: 16px; text-align: center" size=1 name=q7d> H<sub>2</sub>O → <input style="font-size: 16px;text-align:center" size=1 name=q7e> K[Ag(CN)<sub>2</sub>] + <input style="font-size: 16px;text-align: center" size=1 name=q7f> KOH </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(7,'Assorted Equations',4,8,1,2,4,4,'Ag + KCN + O<sub>2</sub> + H<sub>2</sub>O','K[Ag(CN)<sub>2</sub>] + KOH');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(7,'Assorted Equations',4,8,1,2,4,4,'4Ag + 8KCN + O<sub>2</sub> + 2H<sub>2</sub>O','4K[Ag(CN)<sub>2</sub>] + 4KOH');" 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>
<b>Equation 8.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q8a>Si + <input style="font-size: 16px;text-align:center" size=1 name=q8b> HF → <input style="font-size: 16px;text-align: center" size=1 name=q8c> H<sub>2</sub>SiF<sub>6</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q8d> H<sub>2</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(8,'Assorted Equations',1,6,1,2,0,0,'Si + HF','H<sub>2</sub>SiF<sub>6</sub> + H<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(8,'Assorted Equations',1,6,1,2,0,0,'Si + 6HF','H<sub>2</sub>SiF<sub>6</sub> + 2H<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="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>
<b>Equation 9.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q9a> Si + <input style="font-size: 16px;text-align:center" size=1 name=q9b> NaOH + <input style="font-size: 16px;text-align:center" size=1 name=q9c> H<sub>2</sub>O → <input style="font-size: 16px;text-align: center" size=1 name=q9d> Na<sub>2</sub>SiO<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q13e> H<sub>2</sub></p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(9,'Assorted Equations',1,2,1,1,2,0,'Si + NaOH + H<sub>2</sub>O','Na<sub>2</sub>SiO<sub>3</sub> + H<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(9,'Assorted Equations',1,2,1,1,2,0,'Si + 2NaOH + H<sub>2</sub>O','Na<sub>2</sub>SiO<sub>3</sub> + 2 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="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>
<b>Equation 10.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q10a> P<sub>4</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q10b> NaOH + <input style="font-size: 16px;text-align:center" size=1 name=q10c> H<sub>2</sub>O → <input style="font-size: 16px;text-align: center" size=1 name=q10d> PH<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q10e> NaH<sub>2</sub>PO<sub>2</sub></p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(10,'Assorted Equations',1,3,3,1,3,0,'P<sub>4</sub> + NaOH + H<sub>2</sub>O','PH<sub>3</sub> + NaH<sub>2</sub>PO<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(10,'Assorted Equations',1,3,3,1,3,0,'P<sub>4</sub> + 3NaOH + 3H<sub>2</sub>O','PH<sub>3</sub> + 3NaH<sub>2</sub>PO<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="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>
<b>Equation 11.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q11a> Br<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q11b> Na<sub>2</sub>SO<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q11c> H<sub>2</sub>O → <input style="font-size: 16px;text-align: center" size=1 name=q11d> Na<sub>2</sub>SO<sub>4</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q11e> HBr</p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(11,'Assorted Equations',1,1,1,1,2,0,'Br<sub>2</sub> +Na<sub>2</sub>SO<sub>3</sub> + H<sub>2</sub>O','Na<sub>2</sub>SO<sub>4</sub> + HBr');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(11,'Assorted Equations',1,1,1,1,2,0,'Br<sub>2</sub> +Na<sub>2</sub>SO<sub>3</sub> + H<sub>2</sub>O','Na<sub>2</sub>SO<sub>4</sub> + 2HBr');" 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>
<b>Equation 12.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q12a> Br<sub>2</sub> + <input style="font-size: 16px;text-align: center" size=1 name=q12b> SO<sub>2</sub> + <input style="font-size: 16px;text-align: center" size=1 name=q12c> H<sub>2</sub>O → <input style="font-size: 16px;text-align: center" size=1 name=q12d> H<sub>2</sub>SO<sub>4</sub> + <input style="font-size: 16px;text-align: center" size=1 name=q12e> HBr</p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(12,'Assorted Equations',1,1,2,1,2,0,'Br<sub>2</sub> + SO<sub>2</sub> + H<sub>2</sub>O','H<sub>2</sub>SO<sub>4</sub> + HBr');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(12,'Assorted Equations',1,1,2,1,2,0,'Br<sub>2</sub> + SO<sub>2</sub> + 2 H<sub>2</sub>O','H<sub>2</sub>SO<sub>4</sub> + 2HBr');" 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>
<b>Equation 13.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q13a> Br<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q13b> NH<sub>3</sub> → <input style="font-size: 16px;text-align: center" size=1 name=q13c> N<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q13d> NH<sub>4</sub>Br</p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(13,'Assorted Equations',3,8,1,6,0,0,'Br<sub>2</sub> + NH<sub>3</sub>','N<sub>2</sub> + NH<sub>4</sub>Br');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(13,'Assorted Equations',3,8,1,6,0,0,'3Br<sub>2</sub> + 8NH<sub>3</sub>','N<sub>2</sub> + 6NH<sub>4</sub>Br');" 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>
<b>Equation 14.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q14a> Br<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q14b> Na<sub>2</sub>CO<sub>3</sub> → <input style="font-size: 16px;text-align: center" size=1 name=q14c> NaBr + <input style="font-size: 16px;text-align:center" size=1 name=q14d> NaBrO<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q14e> CO<sub>2</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(14,'Assorted Equations',3,3,1,5,3,0,'Br<sub>2</sub> + Na<sub>2</sub>CO<sub>3</sub> ','NaBr + NaBrO<sub>3</sub> + CO<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(14,'Assorted Equations',3,3,1,5,3,0,'3Br<sub>2</sub> + 3Na<sub>2</sub>CO<sub>3</sub> ','NaBr + 5NaBrO<sub>3</sub> + 3CO<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="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>
<b>Equation 15.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q15a>NaBr + <input style="font-size: 16px;text-align:center" size=1 name=q15b>NaBrO<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q15c>H<sub>2</sub>SO<sub>4</sub>→ <input style="font-size: 16px;text-align: center" size=1 name=q15d>Na<sub>2</sub>SO<sub>4</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q15e>H<sub>2</sub>O + <input style="font-size: 16px;text-align:center" size=1 name=q15f>Br<sub>2</sub></p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(15,'Assorted Equations',5,1,3,3,3,3,'NaBr + NaBrO<sub>3</sub> + H<sub>2</sub>SO<sub>4</sub>','Na<sub>2</sub>SO<sub>4</sub> + H<sub>2</sub>O + Br<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(15,'Assorted Equations',5,1,3,3,3,3,'5NaBr + NaBrO<sub>3</sub> + 3H<sub>2</sub>SO<sub>4</sub>','3Na<sub>2</sub>SO<sub>4</sub> + 3H<sub>2</sub>O + 3Br<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="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>
<b>Equation 16.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q16a> I<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q16b> Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> → <input style="font-size: 16px;text-align: center" size=1 name=q16c> Na<sub>2</sub>S<sub>4</sub>O<sub>6</sub> + <input style="font-SIZE:16px;text-align:center" size=1 name=q16d> NaI</p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(16,'Assorted Equations',1,2,1,2,0,0,'I<sub>2</sub> + Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub>','Na<sub>2</sub>S<sub>4</sub>O<sub>6</sub>+ NaI');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(16,'Assorted Equations',1,2,1,2,0,0,'I<sub>2</sub> + 2Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub>','Na<sub>2</sub>S<sub>4</sub>O<sub>6</sub>+ 2NaI');" 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>
<b>Equation 17.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q17a> I<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q17b> NH<sub>3</sub> → <input style="font-size: 16px;text-align: center" size=1 name=q17c> NI<sub>3</sub>NH<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q17d> HI</p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(17,'Assorted Equations',3,2,1,3,0,0,'I<sub>2</sub> + NH<sub>3</sub>','NI<sub>3</sub>NH<sub>3</sub> + HI');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(17,'Assorted Equations',3,2,1,3,0,0,'3I<sub>2</sub> + 2NH<sub>3</sub>','NI<sub>3</sub>NH<sub>3</sub> + 3HI');" 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>
<b>Equation 18.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q18a> I<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q18b> NaOH(cold & dil) → <input style="font-size: 16px;text-align: center" size=1 name=q18c> NaI + <input style="font-size: 16px;text-align:center" size=1 name=q18d> NaIO + <input style="font-size: 16px;text-align:center" size=1 name=q18e> H<sub>2</sub>O </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(18,'Assorted Equations',1,2,1,1,1,0,'I<sub>2</sub> + NaOH(cold & dil) ','NaI + NaIO + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(18,'Assorted Equations',1,2,1,1,1,0,'I<sub>2</sub> + 2NaOH(cold & dil) ','NaI + NaIO + 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="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>
<b>Equation 19.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q19a> I<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q19b> NaOH(hot & conc.) → <input style="font-size: 16px;text-align: center" size=1 name=q19c> NaI + <input style="font-size: 16px;text-align:center" size=1 name=q19d> NaIO<sub>3</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(19,'Assorted Equations',3,6,5,1,3,0,'I<sub>2</sub> + NaOH(hot & conc.) ','NaI + NaIO<sub>3</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(19,'Assorted Equations',3,6,5,1,3,0,'3I<sub>2</sub> + 6NaOH(hot & conc.) ','5NaI + NaIO<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>
<b>Equation 20.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q20a>NaIO<sub>3</sub>+<input style="font-size: 16px;text-align:center" size=1 name=q20b>NaHSO<sub>3</sub> →<input style="font-size: 16px;text-align: center" size=1 name=q20c> Na<sub>2</sub>SO<sub>4</sub>+<input style="font-size: 16px;text-align:center" size=1 name=q20d>NaHSO<sub>4</sub>+<input style="font-size: 16px;text-align:center" size=1 name=q20e>H<sub>2</sub>O + <input style="font-size: 16px;text-align:center" size=1 name=q27f>I<sub>2</sub></p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(20,'Assorted Equations',2,5,2,3,1,1,'NaIO<sub>3</sub> + NaHSO<sub>3</sub> ','Na<sub>2</sub>SO<sub>4</sub> + NaHSO<sub>4</sub> + H<sub>2</sub>O + I<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(20,'Assorted Equations',2,5,2,3,1,1,'2NaIO<sub>3</sub> + 5NaHSO<sub>3</sub> ','2Na<sub>2</sub>SO<sub>4</sub> + 3NaHSO<sub>4</sub> + H<sub>2</sub>O + I<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="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>
<b>Equation 21.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q21a> Na<sub>2</sub>SO<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q21b>S → <input style="font-size: 16px;text-align: center" size=1 name=q21c> Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(21,'Assorted Equations',1,1,1,0,0,0,'Na<sub>2</sub>SO<sub>3</sub> + S','Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(21,'Assorted Equations',1,1,1,0,0,0,'Na<sub>2</sub>SO<sub>3</sub> + S','Na<sub>2</sub>S<sub>2</sub>O<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="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>
<b>Equation 22.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q22a> Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q22b>HCl → <input style="font-size: 16px;text-align: center" size=1 name=q22c> NaCl + <input style="font-size: 16px;text-align:center" size=1 name=q22d> S + <input style="font-size: 16px;text-align:center" size=1 name=q22e> SO<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q22f> H<sub>2</sub>O</p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(22,'Assorted Equations',1,2,2,1,1,1,'Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + HCl ','NaCl + S + SO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(22,'Assorted Equations',1,2,2,1,1,1,'Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + 2HCl ','2NaCl + S + SO<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>
<b>Equation 23.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q23a> Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q23b> AgNO<sub>3</sub> → <input style="font-size: 16px;text-align: center" size=1 name=q23c> Ag<sub>2</sub>S<sub>2</sub>O<sub>3</sub>(white) + <input style="font-size: 16px;text-align:center" size=1 name=q23d> NaNO<sub>3</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(23,'Assorted Equations',1,2,1,2,0,0,'Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + AgNO<sub>3</sub> ','Ag<sub>2</sub>S<sub>2</sub>O<sub>3</sub>(white) + NaNO<sub>3</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(23,'Assorted Equations',1,2,1,2,0,0,'Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + 2AgNO<sub>3</sub> ','Ag<sub>2</sub>S<sub>2</sub>O<sub>3</sub>(white) + 2NaNO<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="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>
<b>Equation 24.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q24a> Ag<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q24b> H<sub>2</sub>O → <input style="font-size: 16px;text-align: center" size=1 name=q24c> Ag<sub>2</sub>S(black) + <input style="font-size: 16px;text-align:center" size=1 name=q24d> H<sub>2</sub>SO<sub>4</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(24,'Assorted Equations',1,1,1,1,0,0,'Ag<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + H<sub>2</sub>O ','Ag<sub>2</sub>S(black) + H<sub>2</sub>SO<sub>4</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(24,'Assorted Equations',1,1,1,1,0,0,'Ag<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + H<sub>2</sub>O ','Ag<sub>2</sub>S(black) + H<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="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>
<b>Equation 25.</b><p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q25a> CuSO<sub>4</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q25b> KI → <input style="font-size: 16px;text-align: center" size=1 name=q25c> CuI + <input style="font-size: 16px;text-align:center" size=1 name=q25d> K<sub>2</sub>SO<sub>4</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q25e> I<sub>2</sub> </p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(25,'Assorted Equations',2,4,2,2,1,0,'CuSO<sub>4</sub> + KI ','CuI + K<sub>2</sub>SO<sub>4</sub> + I<sub>2</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(25,'Assorted Equations',2,4,2,2,1,0,'2CuSO<sub>4</sub> + 4KI ','2CuI + 2K<sub>2</sub>SO<sub>4</sub> + I<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="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>
<b>Equation 26.</b> <p style="font-size:115%; text-align: center;"><input style="font-size: 16px;text-align: center"
size=1 name=q26a> Ag<sub>2</sub>S + <input style="font-size: 16px;text-align:center" size=1 name=q26b> NaCN + <input style="font-size: 16px;text-align:center" size=1 name=q26c> O<sub>2</sub> → <input style="font-size: 16px;text-align: center" size=1 name=q26d> NaAg(CN)<sub>2</sub> + <input style="font-size: 16px;text-align:center" size=1 name=q26e> Na<sub>2</sub>SO<sub>4</sub></p>
<p style="font-size:115%; text-align: center;">
<input onclick="check(26,'Assorted Equations',1,4,1,2,1,0,'Ag<sub>2</sub>S +NaCN + O<sub>2</sub>','NaAg(CN)<sub>2</sub> + Na<sub>2</sub>SO<sub>4</sub>');" type="button" value="Check answer"> <input type="reset" value="Reset"> <input onclick="show(26,'Assorted Equations',1,4,1,2,1,0,'Ag<sub>2</sub>S + 4NaCN + O<sub>2</sub>','2NaAg(CN)<sub>2</sub> + Na<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="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>
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