Chapter 21, Problem 31A

Interpretation Introduction

Interpretation: The function of the salt bridge needs to be explained in a voltaic cell.

Concept Introduction: In an electrochemical cell, there are two electrodes; anode and cathode. At the anode, oxidation takes place and at the cathode reduction takes place.

Explanation of Solution

In a voltaic cell, a spontaneous redox reaction takes place due to which a continuous flow of electrons takes place through the conductor. Here, Cathode and anode electrodes are placed in different containers connected via salt bridges. Here, the function of the salt bridge is to maintain electrical neutrality. It prevents the equilibrium in cell reaction.