Question

The number of moles of H2O2 required to
completely react with 400 ml of 0. 5 N KMno, in
acidic medium are
(1) 0.1
(2) 02
3) 10
(4) 0.5

Answer 1

No of gram equivalent = no. of moles (n) × nf = normality × volume (In litres)

Kmn04 is an oxiding agent and will oxide O- of H2O2 to O2 (oxidation state=0). Hence nf of H202 is 2.

==> 2 × n(H2O2) = 0.4 × 0.5

==> n = 0.1

Hence 0.1 mole of H2O2 is required.

Answer 2

Answer:

0.1 moles

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