Reduction of the metal centre in aqueous permanganate ion involves

3 electrons in neutral medium

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

5 electrons in neutral medium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3 electrons in alkaline medium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

5 electrons in acidic medium

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 5 electrons in acidic medium
In acidic medium:
$M n O_{4}^{⊝} + 5 e^{⊝} \to M n^{2 +} (^{'} n^{'} f a c t o r = 5)$
In strongly alkaline medium:
$M n O_{4}^{⊝} + e^{⊝} \to M n O_{4}^{2 -} (^{'} n^{'} f a c t o r = 1)$
In weakly basic and neutral medium:
$M n O_{4}^{⊝} + 3 e^{⊝} \to M n O_{2} (^{'} n^{'} f a c t o r = 3)$

Suggest Corrections