What is the function of a salt bridge in a galvanic cell?

What is the function of a salt bridge in a galvanic cell?

• A. Increases resistance to limit current.
• B. Serves as the anode compartment.
• C. Maintains electrical neutrality by permitting ion flow and completing the circuit.
• D. Provides electrons to the external circuit.

Answer: (C)

The function being tested is how a salt bridge keeps a galvanic cell running by letting ions move between half-cells to balance charges. As electrons flow through the external circuit from the anode to the cathode, charge would build up in each solution. The salt bridge provides a path for counter-ions to migrate, maintaining electrical neutrality in both compartments and completing the circuit from inside the cell. This keeps the redox reaction from stopping. The salt bridge doesn’t supply electrons or serve as the anode compartment, and its main job isn’t to drastically increase resistance; it mainly enables ion flow to balance charges as the current flows.

The function being tested is how a salt bridge keeps a galvanic cell running by letting ions move between half-cells to balance charges. As electrons flow through the external circuit from the anode to the cathode, charge would build up in each solution. The salt bridge provides a path for counter-ions to migrate, maintaining electrical neutrality in both compartments and completing the circuit from inside the cell. This keeps the redox reaction from stopping. The salt bridge doesn’t supply electrons or serve as the anode compartment, and its main job isn’t to drastically increase resistance; it mainly enables ion flow to balance charges as the current flows.