O-LevelChemistryElectrolysis5070/11 · May/June 2022 · Q161 Mark

Lead(II) bromide is electrolysed using inert electrodes. Which statement is correct?

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Abrown gas is seen at the positive electrode.

BElectrons pass through the solution from one electrode to the other.

CIons pass through the circuit from one electrode to the other.

DThe lead(II) ions are oxidised.

✓ Correct answer

A: brown gas is seen at the positive electrode.

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

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