Which type of electrolytes are used in a salt bridge?

1.	Which type of electrolytes are used in a salt bridge?
Answer» Solution :Only those electrolytes for which CATIONS and anions have NEARLY the same IONIC mobilities (i.e distance travelled by an ion PER second under a POTENTIAL gradient one volt) are used as electrolytes in the salt bridge. Thus KCl, `KNO_3,K_2SO_4 and NH_4NO_3` are preferred over NaCl, `NaNO_3` and `Na_2 SO_4`.

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