NEET Chemistry Hydrogen Questions Solved

NEET - 2014

The reaction of aqueous KMnO4 with H2O2 in acidic conditions gives

(a) Mn4+ and O2                                     (b) Mn2+ and O2

(c) Mn2+ and O3                                     (d) Mn4+ and MnO2

The reaction of aqueous KMnO4 with H2O2 in acidic medium is

3H2SO4 + 2KMnO4 + 5H2O2  5O2 + 2MnSO4 + 8H2O + K2SO4

In the above reaction, KMnO4 oxidises H2O2 to O2 and itself [MnO4-] gets reduced to Mn2+ ion as MnSO4. Hence, aqueous solution of KMnO4 with H2O2 yields Mn2+ and O2 in acidic conditions.

Difficulty Level:

  • 15%
  • 51%
  • 23%
  • 13%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 25, 2019)