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Chemistry · May / June 2016 · Paper 12 · Question 12

5070Electrolysis

Copper is purified by electrolysis. Which statement is not correct?

  1. ABoth electrodes contain copper.
  2. BCopper is both oxidised and reduced in the process.
  3. CPure copper is deposited on the positive electrode.
  4. DThe electrolyte is aqueous copper(II) sulfate.

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Correct answer: C. Pure copper is deposited on the positive electrode.

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