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From: lakhikaReply 1 of 85Reply
Subject: Contributed Answer/Explanation to Q. 1
   
   hydronium as acid gave out hydronium ions.

Posted at: Sat Feb 20 19:19:07 2010 (GMT)

From: lakhikaReply 2 of 85Reply
Subject: Contributed Answer/Explanation to Q. 7
   
   
   because metallic increases down a group.

Posted at: Sat Feb 20 19:23:22 2010 (GMT)

From: lakhikaReply 3 of 85Reply
Subject: Contributed Answer/Explanation to Q. 8
   
   bcz electronegativity down a group

Posted at: Sat Feb 20 19:24:47 2010 (GMT)

From: lakhikaReply 4 of 85Reply
Subject: Contributed Answer/Explanation to Q. 9
   
   valence electron remain in a group

Posted at: Sat Feb 20 19:26:19 2010 (GMT)

From: alokrajivReply 5 of 85Reply
Subject: Contributed Answer/Explanation to Q. 56
   
   
   Cation and Anion ( charged particles are asked ) (1/2) each

Posted at: Mon Mar 8 17:36:18 2010 (GMT)

From: alokrajivReply 6 of 85Reply         View replies (1)
Subject: Contributed Answer/Explanation to Q. 61
   
   Double bond (only one )

Posted at: Mon Mar 8 17:38:12 2010 (GMT)

From: alokrajivReply 7 of 85Reply
Subject: Contributed Answer/Explanation to Q. 65
   
   Triple bond ( a single one )

Posted at: Mon Mar 8 17:39:30 2010 (GMT)

From: alokrajivReply 8 of 85Reply         View replies (1)
Subject: Contributed Answer/Explanation to Q. 70
   
   <span style="white-space: nowrap" class="chemf"><a
   href="http://en.wikipedia.org/wiki/Hydrogen"
   title="Hydrogen">H</a><sub>2</sub></span><span
   style="white-space: nowrap" class="chemf"><a
   href="http://en.wikipedia.org/wiki/Sulfate"
   title="Sulfate">SO<sub>4</sub></a></span>. and
   HCl

Posted at: Mon Mar 8 17:47:27 2010 (GMT)

From: alokrajivReply 9 of 85Reply
Subject: Contributed Answer/Explanation to Q. 70
   
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   <p class="MsoNormal">
   <span class="chemf">H<sub>2</sub>SO<sub>4
   </sub></span><span class="chemf"> and
   </span><span class="chemf">HCl<br />
   </span>
   </p>

Posted at: Mon Mar 8 17:51:35 2010 (GMT)

From: alokrajivReply 10 of 85Reply
Subject: Contributed Answer/Explanation to Q. 72
   
   The colour of litmus present after the expirement is noted. If it is blue it
   was Ammonia, else if it was red it was Hydrogen chloride.

Posted at: Mon Mar 8 17:54:00 2010 (GMT)

From: alokrajivReply 11 of 85Reply         View replies (2)
Subject: Contributed Answer/Explanation to Q. 73
   
   <p>
   <span style="white-space: nowrap" class="chemf">Fe + 2HCl
   → FeCl<sub>2</sub> + H<sub>2</sub></span>
   </p>
   <p>
   With HCl, metals with variable valency forms always lower chloride. 
   </p>

Posted at: Mon Mar 8 17:59:17 2010 (GMT)

From: alokrajivReply 12 of 85Reply
Subject: Contributed Answer/Explanation to Q. 73
   
   <p>
   <span style="white-space: nowrap" class="chemf">Fe + 2HCl
   → FeCl<sub>2</sub> + H<sub>2</sub></span>
   </p>
   <p>
   With HCl, metals with variable valency forms always lower chlorides. 
   </p>

Posted at: Mon Mar 8 18:03:26 2010 (GMT)

From: alokrajivReply 13 of 85Reply
Subject: Contributed Answer/Explanation to Q. 73
   
   <p>
   <span style="white-space: nowrap" class="chemf">Fe + 2HCl
   → FeCl<sub>2</sub> + H<sub>2</sub></span>
   </p>
   <p>
   With HCl, metals with variable valency forms always lower chlorides. 
   </p>

Posted at: Mon Mar 8 18:04:18 2010 (GMT)

From: alokrajivReply 14 of 85Reply
Subject: Contributed Answer/Explanation to Q. 73
   
   <p>
   <span style="white-space: nowrap" class="chemf">Fe + 2HCl
   → FeCl<sub>2</sub> + H<sub>2</sub></span>
   </p>
   <p>
   With HCl, metals with variable valency forms always lower chlorides. 
   </p>

Posted at: Mon Mar 8 18:04:44 2010 (GMT)

From: alokrajivReply 15 of 85Reply         View replies (2)
Subject: Contributed Answer/Explanation to Q. 77
   
   Na2S2O3  + HCl → NaCl + SO2 + H2O + S

Posted at: Mon Mar 8 18:10:59 2010 (GMT)

From: alokrajivReply 16 of 85Reply
Subject: Contributed Answer/Explanation to Q. 77
   
   
   Na2S2O3  + HCl → NaCl + SO2 + H2O + S
   
   
   ( Simpler, accepted in key ) 

Posted at: Mon Mar 8 18:11:29 2010 (GMT)

From: alokrajivReply 17 of 85Reply
Subject: Contributed Answer/Explanation to Q. 77
   
   
   Na2S2O3  + HCl → NaCl + SO2 + H2O + S
   
   
   ( Simpler, and accepted in key ) 

Posted at: Mon Mar 8 18:11:46 2010 (GMT)

From: alokrajivReply 18 of 85Reply
Subject: Contributed Answer/Explanation to Q. 77
   
   
   Na2S2O3  + HCl → NaCl + SO2 +
   H2O + S
   
   
   ( Simpler, and accepted in key ) 

Posted at: Mon Mar 8 18:12:04 2010 (GMT)

From: kaustubh_mokashiReply 19 of 85Reply
Subject: Contributed Answer/Explanation to Q. 1
   
   H3O+

Posted at: Tue Mar 9 08:24:17 2010 (GMT)

From: kaustubh_mokashiReply 20 of 85Reply
Subject: Contributed Answer/Explanation to Q. 2
   
   OH -

Posted at: Tue Mar 9 08:24:58 2010 (GMT)

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