The reaction at cathode in the cells commonly used in clocks invo… - Vidyadip

MCQ

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

✓
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

Correct option: A.

reduction of Mn from +4 to +3

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

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