IB Chemistry SL Reactivity 3.3.3 Radical Substitution

Practise constructing the radical substitution mechanism of an alkane with a halogen. Write the initiation step, a propagation cycle that consumes and regenerates radicals, and…

Syllabus
First assessment 2025
Objective
3.3.3
Level
SL

Exam points

  • write homolytic halogen initiation with UV light or heat and correctly marked radicals
  • build propagation steps that consume one radical and regenerate another chain carrier
  • write termination by combining two radicals and explain the possible product mixture

3.3.3—Radical substitution question 1

[Maximum number: 1]

Chlorine undergoes many reactions.

State the type of reaction occurring when ethane reacts with chlorine to produce chloroethane.

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