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

The reaction at cathode in the cells commonly used in clocks involves.
  1. reduction of \(\mathrm{Mn}\) from +7 to +2
  2. reduction of \(\mathrm{Mn}\) from +4 to +3
  3. oxidation of \(\mathrm{Mn}\) from +3 to +4
  4. oxidation of \(\mathrm{Mn}\) from +2 to +7

Solution

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

Asked in: JEE Main 2024 (05 Apr Shift 1)

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