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IB Chemistry HL 3.4.10 Leaving Group Effects Question Bank

Practise IB Chemistry HL 3.4.10 Leaving Group Effects with focused questions linking reaction structure, mechanism and observed products.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • compare carbon–halogen bond enthalpies to predict which bond breaks more readily
  • relate a weaker or longer C–X bond to lower activation energy and faster substitution
  • use leaving-group identity rather than carbon skeleton when all other conditions are fixed

3.4.10 (HL)—Leaving group effects 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.

Outline how the rate of reaction of 1-bromobutane with sodium hydroxide compares with the rate of reaction of 1-chlorobutane with sodium hydroxide under the same conditions.

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