A-LevelChemistryHalogen derivatives9701/12 · May/June 2011 · Q271 Mark

1,1-dichloropropane reacts with aqueous sodium hydroxide in a series of steps to give propanal. CH3CH2CHCl2 --NaOH(aq)--> CH3CH2CHO Which term describes the first step of this reaction?

Aelectrophilic addition

Belimination

Cnucleophilic substitution

Doxidation

✓ Correct answer

C: nucleophilic substitution

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 2011 Paper 1 Variant 2, question 27.

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