O-LevelChemistryElectrolysis5070/12 · May/June 2020 · Q171 Mark

The chloride of metal X is dissolved in water. A concentrated solution of this chloride is electrolysed using inert electrodes. X is above sodium in the reactivity series. In addition to chlorine, which gas is liberated and at which electrode?

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Ahydrogen, anode

Bhydrogen, cathode

Coxygen, anode

Doxygen, cathode

✓ Correct answer

B: hydrogen, cathode

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2020 Paper 1 Variant 2, question 17.

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