Question

Differences between galvanic cell and electrolytic cell

Answer 1

Answer:

Explanation:

GALVANIC CELL

- A Galvanic cell converts chemical energy into electrical energy.

- Here, the redox reaction is spontaneous and is responsible for the production of electrical energy.

- The two half-cells are set up in different containers, being connected through the salt bridge or porous partition.

- The electrons are supplied by the species getting oxidized. They move from anode to the cathode in the external circuit.

- Here the anode is negative and cathode is the positive electrode. The reaction at the anode is oxidation and that at the cathode is reduction.

ELECTROLYTIC CELL

- An electrolytic cell converts electrical energy into chemical energy.

- The redox reaction is not spontaneous and electrical energy has to be supplied to initiate the reaction.

- Both the electrodes are placed in a same container in the solution of molten electrolyte.

- The external battery supplies the electrons. They enter through the cathode and come out through the anode.

- Here, the anode is positive and cathode is the negative electrode. The reaction at the anode is oxidation and that at the cathode is reduction.