Why does the cell potential of mercury cell remain constant throughout its life ?

Why does the cell potential of mercury cell remains constant throughout its life?

Why Mercury cell voltage remain constant throughout its life?

Why a mercury cell gives a constant voltage throughout its life ?

Why a mercury cell gives a constant voltage throughout its life?

Why a mercury cell gives a constant voltage throughout its life ?

Why does mercury cell gives a constant voltage throughout its life ?

Why does a mercury cell gives a constant voltage throughout its life?

The cell potential of mercury cell Is 1.35 V, and remain constant during Its life. Give reason.

Mention the reactions occuring at (i) anode (ii) cathode, during working of a mercury cell. Why does the voltage of a mercury cell remain constant during its operation?