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IB Chemistry HL 3.4.2 Nucleophilic Substitution Questions

Use real HL exam questions to deduce substitution products, compare leaving groups and draw correctly sourced curly-arrow mechanisms.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Identify the electron-deficient carbon bonded to the leaving group as the attack site for a nucleophile.
  • Deduce the substitution product by replacing the leaving group with the nucleophile while preserving the carbon skeleton.
  • Show new-bond formation and leaving-group departure with correctly sourced curly arrows and electron-pair movement.

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Study 3.4.2—Nucleophilic substitution conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 3.4.2 Nucleophilic Substitution Questions question 1

[Maximum number: 1]

Organic compounds have many industrial applications.

1-Bromobutane reacts with aqueous sodium hydroxide, NaOH(aq), to form butan-1-ol.

State the name of the mechanism by which this reaction occurs.

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