A-LevelChemistryElectrochemistry9701/12 · Oct/Nov 2017 · Q81 Mark

Which statement is always correct for an oxidation reaction?

AIt involves the gain of oxygen by an element.

BFor one reactant to be oxidised a different reactant must be reduced.

CThe element or ion being oxidised will gain electrons.

DThe oxidation number of the element being oxidised will increase.

✓ Correct answer

D: The oxidation number of the element being oxidised will increase.

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Topic: Electrochemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2017 Paper 1 Variant 2, question 8.

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