alleryStart learning →A salt bridge in a galvanic cell:
- Allows ion migration to maintain electrical neutrality of the half-cells
- Increases the cell resistance
- Carries electrons from cathode to anode
- Is the site of oxidation
Show answer and solution
Correct answer: A. Allows ion migration to maintain electrical neutrality of the half-cells
Salt bridge (KCl or KNO₃ in agar) supplies ions to **neutralize charge build-up** in each half-cell as the reaction proceeds — keeps the cell running.
Without it, charge separation quickly stops the reaction.
It does NOT carry electrons.