The electrochemical cell stops working after some time because:

Engineering

Chemistry

EMF Calculation and Galvanic Cell

Cell Potential Free Energy and Equilibrium Constant

Nernst Equation

Question

The electrochemical cell stops working after some time because:

electrode potentials of both electrodes becomes zero

electrode potentials of both electrodes becomes equal

temperature of the cell increases

the reaction starts proceeding in opposite direction

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Hint − An electrochemical cell is a device that produces an electric current from the energy released by a spontaneous redox reaction.

Explanation −

Electrochemical cells stop working after some time because,

When one compound in the anode of the electrochemical cell is oxidised, those electrons serve to reduce the compound on the cathode side.

When the material at the anode does not have electrons to lose, hence the reaction stops and the cell stops working.

Final answer − Option B