O-LevelChemistryElectrolysis5070/12 · May/June 2014 · Q141 Mark

What is observed during the electrolysis of aqueous copper(II) sulfate using carbon electrodes?

Apink solid is deposited on the anode.

BBubbles form on the negative electrode.

CThe colour of the solution fades.

DThe negative electrode becomes smaller.

✓ Correct answer

C: The colour of the solution fades.

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2014 Paper 1 Variant 2, question 14.

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