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Q.

A 3.4 g sample of H2O2 solution containing x% H2O2 by mass requires x mL of a KMnO4 solution for complete oxidation under acidic condition. The molarity of KMnO4 solution is :

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a

1

b

0.5

c

0.4

d

0.2

answer is C.

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Detailed Solution

Eq. mass of H2O2=342=17Eq. of H2O2=3.4×x100×17= Eq. of KMnO4= X x N x10-3 → N =2Molarity of KMnO4=25=0.4
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A 3.4 g sample of H2O2 solution containing x% H2O2 by mass requires x mL of a KMnO4 solution for complete oxidation under acidic condition. The molarity of KMnO4 solution is :