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Alkanes

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Question 4

Which equation(s) could be part of the propagation stage in the radical substitution of butane, C4H10\text{C}_4\text{H}_{10}C4​H10​, with bromine, Br2\text{Br}_2Br2​, to form bromobutane, C4H9Br\text{C}_4\text{H}_9\text{Br}C4​H9​Br?

  1. C4H9∙+Br2→C4H9Br+Br∙\text{C}_4\text{H}_9^\bullet + \text{Br}_2 \rightarrow \text{C}_4\text{H}_9\text{Br} + \text{Br}^\bulletC4​H9∙​+Br2​→C4​H9​Br+Br∙
  2. C4H10+Br∙→C4H9∙+HBr\text{C}_4\text{H}_{10} + \text{Br}^\bullet \rightarrow \text{C}_4\text{H}_9^\bullet + \text{HBr}C4​H10​+Br∙→C4​H9∙​+HBr
  3. C4H10+Br∙→C4H9Br+H∙\text{C}_4\text{H}_{10} + \text{Br}^\bullet \rightarrow \text{C}_4\text{H}_9\text{Br} + \text{H}^\bulletC4​H10​+Br∙→C4​H9​Br+H∙
A

1, 2 and 3

B

Only 1 and 2

C

Only 1 and 3

D

Only 2 and 3

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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