A solution of 0.4 g sample of H(2)O(2) r...

A solution of 0.4 g sample of `H_(2)O_(2)` reacted with 0.632 g of `KMnO_(4)` in presence of sulphuric acid. The percentage purity of the sample of `H_(2)O_(2)` is :

0.95

0.85

0.8

none of these

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0.2 g if a sample of H_2 O_2 required 10 ml of 1 N KMnO_4 for titration in acidic medium. The percentage purity of H_2 O_2 sample is:

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A 20.0 mL solution containing 0.2 impure H_2O_2 reacts completely with 0.316 g of KMnO_4 in acid solution . The purity of H_2O_2 (in%) is ...........(mol .wt.of H_2O_2=34 , mol . Wt . Of KMnO_4 = 158 )

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