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Hydrogen
Question
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The reaction of aqueous KMnO4 with H2O2 in acidic conditions gives.

  • Mn4+ and O2

  • Mn2+ and O2

  • Mn2+ and O3

  • Mn4+ and MnO2

Answer

B.

Mn2+ and O2

The reaction of aqueous KMnO4 with H2O2 in acidic medium is 
3H2SO4 + KMnO4 +5 H2O2 --> 5O2 +2MnSO4 +8H2O +K2SO4
In the reaction, KMnO4 oxidise H2O2 to O2 and itself [MnO4-] gets reduced to Mn2+ ions as MnSO4. Hence, aqueous solution of KMnO4 with H2O2 yields Mn2+ and O2 in acidic conditions.

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