Q.

3.4 g sample of H2O, solution containing x% H2O2 by weight requires x mL of KMnO4 solution for complete oxidation under acidic condition. The normality of KMnO4 solution is

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a

1N

b

2N

c

3N

d

0.5N

answer is B.

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Detailed Solution

100g of H2O2 sample solution contains =xg of H2O23.4g of H2O2 sample solution contains =x100×3.4Weight of H2O2=3.4x100 Eq of H2O2=3.4x100×117mEq of H2O2=3.4x100×17×1000=34x17=2xmEq of KMnO4=x×Nx×N=2xN=2
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