CAIE A Level Chemistry 9701 · Electrochemistry
A student electrolyses two samples of copper(II) chloride, . One sample is molten, the other is an aqueous solution. Both use inert electrodes. Compare the products formed at the anode and cathode in the two cases, and explain the differences in terms of the ions present and their ease of discharge.
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.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.