CAIE A Level Chemistry 9701 · Electrochemistry
Two electrolytic cells are set up using inert electrodes. Cell 1 contains dilute aqueous copper(II) chloride. Cell 2 contains concentrated aqueous copper(II) chloride. Compare the products formed at the anode and cathode in each cell, and explain why the anode product differs.
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.