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Alkanes

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Question 4

Which equation represents a propagation step in the free-radical chlorination of ethane?

A

CH3CH3+Cl∙→CH3CH2Cl+H∙\text{CH}_3\text{CH}_3 + \text{Cl}^\bullet \to \text{CH}_3\text{CH}_2\text{Cl} + \text{H}^\bulletCH3​CH3​+Cl∙→CH3​CH2​Cl+H∙

B

CH3CH2∙+Cl2→CH3CH2Cl+Cl∙\text{CH}_3\text{CH}_2^\bullet + \text{Cl}_2 \to \text{CH}_3\text{CH}_2\text{Cl} + \text{Cl}^\bulletCH3​CH2∙​+Cl2​→CH3​CH2​Cl+Cl∙

C

CH3CH2∙+Cl∙→CH3CH2Cl\text{CH}_3\text{CH}_2^\bullet + \text{Cl}^\bullet \to \text{CH}_3\text{CH}_2\text{Cl}CH3​CH2∙​+Cl∙→CH3​CH2​Cl

D

CH3CH3+Cl2→CH3CH2Cl+HCl\text{CH}_3\text{CH}_3 + \text{Cl}_2 \to \text{CH}_3\text{CH}_2\text{Cl} + \text{HCl}CH3​CH3​+Cl2​→CH3​CH2​Cl+HCl

Markscheme

Alkanes Questions

  1. A Level
  2. /Chemistry
  3. /Alkanes

9 exam-style questions on AQA A Level Chemistry Alkanes, covering Fractional distillation of crude oil, Modification of alkanes by cracking, Combustion of alkanes, and Chlorination of alkanes. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank