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Edexcel A-Level Chemistry AS 5.2 Geometric Isomerism in Terms of Restricted Rotation Around a C C Double Bond and the Nature of the Substituents on Questions

Use marked Edexcel IAL Chemistry questions to test restricted double-bond rotation, check substituents and draw or select the alternative E/Z or cis/trans isomer.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Explain geometric isomerism through restricted rotation around a carbon–carbon double bond.
  • Check that each alkene carbon has two different substituents before assigning isomers.
  • Draw or select the alternative geometric isomer without changing atom connectivity.

Edexcel A-Level Chemistry AS 5.2 Geometric Isomerism in Terms of Restricted Rotation Around a C C Double Bond and the Nature of the Substituents on Questions question 1

[Maximum number: 2]

This question is about alkenes.

A straight-chain alkene, X, has the structure shown.

Figure for Question Edexcel A-Level Chemistry AS 5.2 Geometric Isomerism in Terms of Restricted Rotation Around a C C Double Bond and the Nature of the Substituents on Questions question 1 — Edexcel A-Level Chemistry AS

Explain why X can exist as geometric isomers.

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