The reaction at cathode in the cells commonly used in clocks... | Chemistry | SolveeIt | Solveeit

Today, August 18

Question

The reaction at cathode in the cells commonly used in clocks involves.

A

reduction of Mn from +4 to +3

B

oxidation of Mn from +3 to +4

C

reduction of Mn from + 7 to +2

D

oxidation of Mn from + 2 to +7

Answer

reduction of Mn from +4 to +3

Explanation

Solution

In the cathode reaction manganese (Mn) is reduced from the $+4$ oxidation state to the $+3$ state.