A-LevelChemistryHalogen derivatives9701/12 · May/June 2024 · Q281 Mark

Aqueous NaOH reacts with 1-bromopropane to give propan-1-ol. What should be included in a diagram of the first step in the mechanism?

Acurly arrow from a lone pair on the OH⁻ ion to the Cᵟ⁺ atom of 1-bromopropane

Bcurly arrow from the Cᵟ⁺ atom of 1-bromopropane to the OH⁻ ion

Ccurly arrow from the C–Br bond to the C atom

Dthe homolytic fission of the C–Br bond

✓ Correct answer

A: curly arrow from a lone pair on the OH⁻ ion to the Cᵟ⁺ atom of 1-bromopropane

Oracle Prep sorts past-paper questions by topic, so you can drill Halogen derivatives and see which topics are most likely to come up next.

Topic: Halogen derivatives, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2024 Paper 1 Variant 2, question 28.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content