Question
The reaction of aqueous KMnO4 with H2O2 in acidic conditions gives.
-
Mn4+ and O2
-
Mn2+ and O2
-
Mn2+ and O3
-
Mn4+ and MnO2
Solution
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.
