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O-LevelChemistryElectrolysis5070/11 · Oct/Nov 2021 · Q141 Mark

Which statement about electrolysis reactions is correct?

ABromine is formed at the anode when molten lead bromide is electrolysed.
BPositive ions are discharged at the positive electrode.
CSodium is formed at the cathode when aqueous sodium chloride is electrolysed.
DSulfur dioxide is formed as a gas when dilute sulfuric acid is electrolysed.

✓ Correct answer

A: Bromine is formed at the anode when molten lead bromide is electrolysed.

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About this question

Topic
Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2021 Paper 1 Variant 1, question 14.

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