Question

Define electrochemical cell. What happens if external potential applied becomes greater than
Eº cell of electrochemical cell?

Would anyone please explain in Detail.

Thank you in advance.

​

Answer 1

Answer:

Electrochemical cell is a device used for the production of electricity from energy released during spontaneous chemical reaction and use electrical energy to bring about the chemical change. If the external potential applied become greater than E° cell of electrochemical cell, the reaction gets reversed.

                                                          OR

Electrochemical cell is a device used for the production of electricity from energy released during spontaneous chemical reaction and use electrical energy to bring about the chemical change. If the external potential applied become greater than E°cell of electrochemical cell, the reaction gets reversed. It starts acting as an electrolytic cell and vice-versa.

Explanation: