Define a salt bridge.
A) A pathway, composed of salt water, that ions pass through.
B) A pathway in which no ions flow.
C) A pathway between the cathode and anode in which ions are reduced.
D) A pathway between the cathode and anode in which ions are oxidized.
E) A pathway through which counterions can flow between the half-cells without the solutions in the half-cell totally mixing.

Question

Quizplus · Accepted Answer

A salt bridge is a pathway that allows for the exchange of counterions between half-cells in an electrochemical cell. These counterions help maintain charge balance within each half-cell by keeping the solutions from mixing completely. This allows for the flow of electrons through the external circuit, completing the redox reaction. A salt bridge can be made of a variety of materials, including a gel-like substance or a porous membrane, filled with a salt solution (such as KCl).

Define a Salt Bridge