Hydrocarbons · NEET Preparation Chemistry
In the free radical chlorination of methane, which of the following steps represents the propagation step?
Practice question from Hydrocarbons (NEET Preparation Chemistry), with the correct answer and a step-by-step solution.
easy · MCQ · Q-2F587F
In the free radical chlorination of methane, which of the following steps represents the propagation step?
- A.Cl2 -> 2 Cl•
- B.•CH3 + Cl• -> CH3Cl
- C.•CH3 + Cl2 -> CH3Cl + Cl•
- D.Cl• + CH4 -> •CH3 + HClCorrect answer
Solution
Propagation steps are those where a radical reacts with a molecule to form a new molecule and a new radical. The reaction of chlorine radical with methane to form a methyl radical and hydrogen chloride is a propagation step (as is the subsequent reaction of methyl radical with Cl2).
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