O-LevelChemistryElectrolysis5070/11 · May/June 2019 · Q141 Mark
Which statement about the purification of copper by electrolysis is correct?
Apure copper anode is used.
Bpure copper cathode is used.
CThe colour of the electrolyte fades throughout the process.
DThe electrolyte used is a solution of copper oxide in water.
✓ Correct answer
B: pure copper cathode is used.
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