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[Post New]6 Jan 2007 00:09:42 IST
    Subject: Difficulties from IIT Chemistry -O.P. Agarwal
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frenied (107)

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Olaaa!! Perrrfect answer. 17  [28 rates]
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answer for Q.27
let new oxidn.state be a.
then change in oxidn no.of nitrogen-2a-(-4)
for we consider change for 2 atoms.
but change=total electorns lost by one electron by one mole
thus
2a+4=10
a=+3.
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