CAIE A Level Chemistry 9701 · Electrochemistry
Concentrated aqueous sodium chloride is electrolysed using inert electrodes. State the substance liberated at the anode and the substance liberated at the cathode, and explain your reasoning in terms of the species present and their relative ease of discharge.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Suggest means: Apply what you know to an unfamiliar situation. There may be more than one acceptable answer. Reason from the principle you have learned to the new context, and say which principle you are using.
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