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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Nernst equation
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[Post New]26 Feb 2008 08:40:23 IST
    Subject: Nernst equation
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rags (12)

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There s this eqn given--
Mg + 2Ag+----------->Mg2+    +2Ag.
the questions is find the Ecell value for 2Ag+/2Ag.
note...Ag+/Ag,Mg2+/Mg values are given.
 
please explain ..
    
[Post New]26 Feb 2008 10:52:04 IST
    Subject: Nernst equation
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astatine19 (1404)

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Ecell will be the same whether u take 2Ag+/2Ag or Ag+/Ag becoz E knot will remain unchanged and in the second term of nernst eqn., the value of n and the power of Ag+ will cancel out each other
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[Post New]26 Feb 2008 11:31:05 IST
    Subject: Re:Nernst equation
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fwks_phoenix (240)

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calculate standard emf from the standard electrode potential values given in the series..
then use the nerst equation
find the K value and for all Ag n Mg the concentration will b 1.
then it's just substitution....
 
u don't need to use nerst equation for this.. but since u asked for it...

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