Question

In a galvanic cell, the positive ions of salt bridge migrate towards:

• A. - ve electrode
• B. + ve electrode
• C. either anode or cathode
• D. neither anode nor cathode

Answer 1

Answer: (B)

+ ve electrode

In the salt bridge, the positive ions move towards positive electrode as at the positive electrode (cathode) undergo reduction of metal ion take place which makes the solution excess with anion.

$M^{n+}+n{e}^{-}\to M$ (at cathode)

The positive ions of the salt bridge thus get attracted to the free cathodic part or + ve electrode.

Hence, option B is correct.