May/June 2026 Paper 21

2026 · 40 questions · 40 parts · 40 marks

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13ElectrolysisMedium1 mark
Which diagram shows the direction of movement of ions and electrons during the electrolysis of molten sodium chloride?
four labelled electrolysis cell diagrams A to D, each showing a power supply, cathode and anode dipped in molten sodium chloride, with arrows for electron flow in the wires and Na+/Cl- ion movement in the electrolyte