What is the function of the salt bridge in a galvanic cell?
Answer and explanation
Correct answer: A. To allow ions to flow and keep the half-cells electrically neutral
- Step 1: The salt bridge maintains charge balance so the redox reaction can continue.
Answer
To allow ions to flow and keep the half-cells electrically neutral.
Why not the others: To allow electrons to flow between the half-cells: electrons flow through the external wire. To supply additional reactants to the cell: the salt bridge does not take part in the cell reaction. To increase the emf of the cell: the salt bridge completes the circuit but does not change the emf.
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