Question

In an electrochemical process, a salt bridge is used:

• A. to maintain electrical neutrality in each solution
• B. to complete the external circuit so that current can flow for long time
• C. to mix the solution of anodic and cathodic compartment
• D. to supply voltage

Answer 1

Answer: (A)

to maintain electrical neutrality in each solution

A salt bridge, in electrochemistry, is a laboratory device used to connect the oxidation and reduction half-cells of a galvanic cell (voltaic cell), a type of electrochemical cell. It maintains electrical neutrality within the internal circuit, preventing the cell from rapidly running its reaction to equilibrium. It maintains electrical neutrality of electrolytes in two half cells. It allows flowing of current by completing the internal circuit.