A-LevelChemistryHydrocarbons9701/12 · May/June 2024 · Q261 Mark

Z is a gaseous hydrocarbon which has a density of 3.50 × 10⁻³ g cm⁻³ under room conditions. Z reacts with an excess of hot concentrated acidified KMnO4. Only one type of carboxylic acid is formed in this reaction. What is Z?

Abut-2-ene

B2,3-dimethylbut-2-ene

Chex-2-ene

Dhex-3-ene

✓ Correct answer

D: hex-3-ene

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Topic: Hydrocarbons, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2024 Paper 1 Variant 2, question 26.

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