UNIT 3
Question
The diagram below shows the electrolytic purification of impure copper.
D
Power supply
(a) Which electrode is the cathode? [Imk]
(b) Which electrode is the anode? [1mk]
(c) What is electrode C made of? [1mk]
(d) What is electrode D made of? [Imk]
(e) Name a suitable electrolyte for this electrolysis? [Imk]
(f) What is labelled as X? [1mk]
(g) At which labelled electrode does oxidation process take place? [1mk]
(h) Name two metals that will be found in substance labelled X. [Imk]
Write the half reaction equations for the reaction taking place at; [2mks]
(i) anode:
(i)
(ii) cathode:
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