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 +

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

Prashant Kotian · Accepted Answer

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

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