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How many mole of electrons are involved ...

How many mole of electrons are involved in the reduction of one mole of `MnO_(4)^(-)` ion in alkaline medium to `MnO_(3)^(-)`

A

1

B

2

C

5

D

3

Text Solution

Verified by Experts

The correct Answer is:
D
In alkaline medium, `KMnO_(4)` acts as an oxidising agent as follows -
`MNO_(4)^(-)+2H_()O+3e^(-)rarrMnO_(2)+4OH^(-)`
Thus three electrons per molecule of are involved.
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