CAIE A Level Chemistry 9701 · Electrochemistry
A student carries out two electrolysis experiments.
Experiment 1: A concentrated aqueous solution of is electrolysed using inert electrodes.
Experiment 2: A molten sample of is electrolysed using inert electrodes.
Suggest, with reasons, the products formed at each electrode in Experiment 1 and in Experiment 2. In your answer, refer to the relevant ions present and the electrode reactions.
5 marks, so the mark scheme is looking for about 5 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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