Question

KMnO4 gets reduced to
(a) K2MnO4 in neutral medium
(b) MnO2 in acidic medium
(c) Mn2+ in alkaline medium
(d) MnO2 in neutral medium

Answer 1

The answer would be (d) i.e. KMnO4 gets reduced to MnO2 in neutral medium..

The reason is that...it is a known fact that n-factor of KMnO4(Mn in +7 oxidation state) is:

• 5 in acidic medium

• 3 in neutral medium

• 1 in alkaline medium..

Hence KMnO4 gets reduced to Mn2+ in acidic medium, MnO2 in neutral medium, and K2MnO4 in basic medium.

Hope it helps ya:))