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Chemistry · May / June 2024 · Paper 12 · Question 12

5070Electrolysis

Which changes are observed during the electrolysis of aqueous copper(II) sulfate using copper electrodes? 1 A pink solid is deposited on the negative electrode. 2 Bubbles form on the positive electrode. 3 The colour of the solution does not change.

  1. A1, 2 and 3
  2. B1 and 2 only
  3. C1 and 3 only
  4. D2 and 3 only

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Correct answer: C. 1 and 3 only

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