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IB Chemistry SL 3.3.2 Homolytic Fission Questions

Use real SL exam questions to explain homolytic bond cleavage, identify radical products and state UV or heat initiation conditions.

Syllabus
First assessment 2025
Course
Chemistry SL
Level
SL

Exam points

  • Explain homolytic fission as breaking a covalent bond so one electron goes to each atom, producing two radicals shown with single-barbed arrows and dots.
  • State the UV-light or heat initiation of a halogen bond and write a balanced initiation equation with radical products.

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Study 3.3.2—Homolytic fission conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry SL 3.3.2 Homolytic Fission Questions question 1

[Maximum number: 1]

Alkenes, such as A (shown below), are important intermediates in the petrochemical industry because they undergo addition reactions to produce a wide variety of products, such as the conversion shown below.

Figure for Question IB Chemistry SL 3.3.2 Homolytic Fission Questions question 1 — IB Chemistry SL

Another way to make B is the reaction shown below.

Figure for Question IB Chemistry SL 3.3.2 Homolytic Fission Questions question 1 — IB Chemistry SL

State the conditions required for this reaction to occur.

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