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Q.

x g of H2O2 requires 100 mL of M/5 KMnO4 in a titration in a solution having pOH = 1.0Which of the following is/are correct?

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a

The value of x is 1.7 g.

b

The value of x is 0.34 g.

c

MnO4⊝ changes to MnO42−.

d

H2O2 changes to O2.

answer is B.

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Detailed Solution

pOH = 1, strong basic medium⇒MnO4⊖⟶MnO42− (n-factor =1)2OH+H2O2⟶O2+2H2O+2e⊖mEq of H2O2=mEq of MnO4⊝ x34/2×1000=100×15×1x = 0.34g
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