Essential Chemistry for IGCSE - Chemical Changes (Section 1 - No. 39)
What is the purpose of the salt bridge in an electrochemical cell?
To provide a direct path for electron flow.
To maintain electrical neutrality in the half-cells.
To act as a catalyst.
To separate the electrodes.
คำอธิบาย
The salt bridge maintains charge balance by allowing ions to flow between the half-cells.