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Question

Hydrogen peroxide acts both as an oxidising and as a reducing agent, depending upon the nature of the reacting species. In which of the following cases H2O2 acts as a reducing agent in acid medium?
  1. MnO4
  2. Cr2O27
  3. SO23
  4. KI

A
MnO4
B
Cr2O27
C
SO23
D
KI
Solution
Verified by Toppr

The oxidation state of Mn in MnO4 is +7. H2O2 can only reduce Mn as it is in maximum oxidation state in MnO4.

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