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Question 13

The free-radical substitution of ethane with chlorine produces chloroethane.

Which equation represents a propagation step in the mechanism for this reaction?

A

C2H6+⋅Cl→⋅C2H5Cl+⋅H\text{C}_2\text{H}_6 + \cdot\text{Cl} \rightarrow \cdot\text{C}_2\text{H}_5\text{Cl} + \cdot\text{H}C2​H6​+⋅Cl→⋅C2​H5​Cl+⋅H

B

⋅C2H5+⋅Cl→C2H5Cl\cdot\text{C}_2\text{H}_5 + \cdot\text{Cl} \rightarrow \text{C}_2\text{H}_5\text{Cl}⋅C2​H5​+⋅Cl→C2​H5​Cl

C

⋅C2H5+Cl2→C2H5Cl+⋅Cl\cdot\text{C}_2\text{H}_5 + \text{Cl}_2 \rightarrow \text{C}_2\text{H}_5\text{Cl} + \cdot\text{Cl}⋅C2​H5​+Cl2​→C2​H5​Cl+⋅Cl

D

C2H6+Cl2→C2H5Cl+HCl\text{C}_2\text{H}_6 + \text{Cl}_2 \rightarrow \text{C}_2\text{H}_5\text{Cl} + \text{HCl}C2​H6​+Cl2​→C2​H5​Cl+HCl

Markscheme

Alkanes Questions

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

15 exam-style questions on OCR A A Level Chemistry Alkanes. Each one has a worked solution and a mark scheme showing where the marks go.

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