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O-LevelChemistryElectrolysis5070/11 · May/June 2020 · Q301 Mark

In the electrolysis of molten aluminium oxide, which statement is correct?

AThe molar ratio of aluminium to oxygen gas formed is 1:2.
BThe molar ratio of aluminium to oxygen gas formed is 3:4.
COxygen gas is formed at the anode.
DReduction occurs at the anode.

✓ Correct answer

C: Oxygen gas is formed at the anode.

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About this question

Topic
Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2020 Paper 1 Variant 1, question 30.

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