A standard aqueous solution of or is frequently used to make a salt bridge in galvanic cells primarily because:

Question

A standard aqueous solution of $KNO_3$ or $KCl$ is frequently used to make a salt bridge in galvanic cells primarily because:

Prashant Kotian · Accepted Answer

Correct answer: C. A salt bridge is used to eliminate or minimize the liquid junction potential. This is achieved best when the ionic mobilities (or transport numbers) of the cation and the anion in the salt bridge electrolyte are nearly identical, so they diffuse at the same rate.

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