In a galvanic cell,.. | Chemsitry | JEE ADVANCED 2014

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Question

In a galvanic cell, the salt bridge

Select the correct option:

A

does not participate chemically in the cell reaction.

B

stops the diffusion of ions from one electrode to another.

C

is necessary for the occurrence of the cell reaction.

D

ensures mixing of the two electrolytic solutions.

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Salt bridge is introduced to keep the solutions of two electrodes separate, such that the ions in electrode do not mix freely with each other. But it cannot stop the process of diffusion.
It does not participate in the chemical reaction. However, it is not necessary for occurence of cell reaction, as we know that designs like lead accumulator, there was no salt bridge, but still reactions takes place.

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