A-LevelChemistryHalogen derivatives9701/12 · Feb/Mar 2021 · Q221 Mark

The diagram shows the structure of a bromo compound that may be formed by the reaction of bromine with a hydrocarbon. [Figure showing structure of 2,3-dibromo-2-methylpropane] Which row is correct? type of reaction mechanism A addition electrophilic B addition nucleophilic C substitution nucleophilic D substitution free-radical

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Aaddition, electrophilic

Baddition, nucleophilic

Csubstitution, nucleophilic

Dsubstitution, free-radical

✓ Correct answer

D: substitution, free-radical

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Topic: Halogen derivatives, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2021 Paper 1 Variant 2, question 22.

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