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JAMB Chemistry 1982 Question 37

Question 37

Hydrocarbons

Which of the following types of reactions takes place between C2H4 and the halogens?

  1. A.Substitution
  2. B.Polymerization
  3. C.Addition
  4. D.Saponification
  5. E.Oxidation
Show the answer and explanation

Answer: C (Addition)

Explanation

Ethene is unsaturated, so a halogen adds across the C=C double bond, e.g. C2H4 + Br2 → C2H4Br2.