O-LevelChemistryElectrolysis5070/12 · Oct/Nov 2022 · Q161 Mark

Dilute aqueous solutions of potassium chloride and magnesium chloride are mixed together. A sample of the mixture is electrolysed using inert electrodes. What are possible products at each of the electrodes?

Achlorine, oxygen

Bchlorine, potassium

Coxygen, hydrogen

Doxygen, magnesium

✓ Correct answer

C: oxygen, hydrogen

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2022 Paper 1 Variant 2, question 16.

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