Step 1: Functions of salt bridge.
The salt bridge is an essential component in electrochemical cells. It serves the following functions:
- It completes the electrical circuit by allowing the flow of ions between the two half-cells.
- It maintains electrical neutrality in the two half-cells by preventing the buildup of charge that would otherwise stop the flow of electrons.
- It ensures that the cell reaction proceeds by enabling the movement of counter-ions to balance the flow of electrons.
Step 2: Conclusion.
Thus, the salt bridge helps maintain the continuity of the reaction in the electrochemical cell.