Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion : Current stops flowing when ECell = 0.


Reason : Equilibrium of the cell reaction is attained.


We know, Ecell= Ecathode – Eanode


For reaction to be spontaneous, Ecellshould have a positive value and ΔrGcellnegative.


At equilibrium, Ecell = 0, as current stops flowing.


Or, Ecathode = Eanode


Hence, Current stops flowing when ECell = 0 because equilibrium of the cell reaction is attained.

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