Question

The salt bridge in a galvanic cell allows the flow of

• A. ions but NOT electrons
• B. BOTH ions and electrons
• C. electrons but NOT ions
• D. NEITHER ions NOR electrons

Hint:

A salt bridge is essential in a galvanic cell to maintain ionic balance by allowing ions to move between the half-cells.

Answer 1

The Correct Option is A

Step 1: Understanding the function of the salt bridge.
In a galvanic cell, the salt bridge is used to complete the electrical circuit by allowing ions to flow between the two half-cells, maintaining electrical neutrality. It does not allow electrons to pass, as those travel through the external wire connecting the electrodes.

Step 2: Analyzing the options.
(A) ions but NOT electrons: This is correct, as the salt bridge allows the flow of ions between the half-cells.
(B) BOTH ions and electrons: Incorrect, as electrons travel through the external circuit, not through the salt bridge.
(C) electrons but NOT ions: Incorrect, as electrons move through the external wire, not the salt bridge.
(D) NEITHER ions NOR electrons: Incorrect, as the salt bridge does allow the flow of ions.

Step 3: Conclusion.
The correct answer is (A) ions but NOT electrons.