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IB Chemistry HL 3.2.3 Homologous Series Questions

Use real exam questions to classify organic compounds into homologous series and justify general formulas, functional groups and successive-member patterns.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Recognise a homologous series from its shared functional group, general formula and similar chemical properties.
  • Apply general formulas to identify, classify or calculate members of the listed organic homologous series.
  • Verify successive-member relationships by checking the CH₂ difference and connect series membership to stated structure or property trends.

Learn this topic

Study 3.2.3—Homologous series conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 3.2.3 Homologous Series Questions question 1

[Maximum number: 1]

Organic compounds have many industrial applications.

An alkene such as ethene can be used as starting material for a range of compounds.

State the general formula for the homologous series of alkenes.

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