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JAMB Chemistry 2011 Question 25

Question 25

Rates of Reaction

CH4(g) + Cl2(g) → CH3Cl(s) + HCl(g)
The major factor that influences the rate of the reaction above is

  1. A.catalyst
  2. B.temperature
  3. C.concentration
  4. D.light
Show the answer and explanation

Answer: D (light)

Explanation

Chlorination of methane is a photochemical reaction: it needs light to split Cl2 into free radicals.