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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: KMnO4
Forum Index -> Inorganic Chemistry like the article? email it to a friend.  
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[Post New]12 Sep 2007 18:57:43 IST
    Subject: KMnO4
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lawyersmb (170)

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For the decolourisation of 1 mol of KMnO4,  the moles of H2O2 required is
  1. ½
  2. 3/2
  3. 5/2
  4. 7/2
 which is the right answer
 
    
[Post New]12 Sep 2007 18:59:56 IST
    Subject: Re:KMnO4
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jatinroxx (355)

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Is it 7/2???
HOPE U GOT IT...
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[Post New]12 Sep 2007 22:27:04 IST
    Subject: Re:KMnO4
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lawyersmb (170)

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it seems the right answer is 5/2 but how?
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[Post New]12 Sep 2007 23:12:16 IST
    Subject: Re:KMnO4
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MAVERICK_7pr (5)

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first u find out d n factor for KMNO4 i.e. 7 and n factor of O in H2O2 then apply law of equivalence and u will get ur ans.
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[Post New]13 Sep 2007 10:46:23 IST
    Subject: Re:KMnO4
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coolank2 (126)

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KMnO4 -----> Mn+2     n = 5
H2O2 -----> O2          n = 2
 
eq of KMnO4 = eq of H2O2
1 X 5 = x X 2
Thus, x = 5/2
This is just da beginning .....
Ankur
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