A-LevelChemistryHalogen derivatives9701/12 · May/June 2017 · Q231 Mark

Aqueous sodium hydroxide 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 δ⁺ atom of 1-bromopropane

Bcurly arrow from the C⁺ 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 δ⁺ 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 2017 Paper 1 Variant 2, question 23.

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