Which of the following is the chain propagation step in chlorination of methane?

C H_{3} + C l \to C H_{3} C l

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C H_{3} + C l - C l \to C H_{3} - C l + C l

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C l - C l \to C l + C l

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C l + C l \to C l_{2}

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Solution

The correct option is C $C H_{3} + C l - C l \to C H_{3} - C l + C l$
Chain initiation
$C l_{2} h 2 \to ˙ C l + C ˙ l$
chain propagation:
$C H_{3} + C l - C l \to C H_{3} C l + C ˙ l$
$C H_{3} C l + C l - C l \to C H_{2} C l + C ˙ l$
$C H_{2} C l_{2} + C l - C l \to C H C l_{3} + C ˙ l$
$C H C l_{3} + C l - C l \to C C l_{4} + C ˙ l$

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Similar questions

(1) C l_{2} \to ∙ 2 C l (2) ∙ C H_{3} + ∙ C H_{3} \to C H_{3} - C H_{3} (3) ∙ C l + C H_{4} \to C H_{3} C l + ∙ C l (4) ∙ C H_{3} + ∙ C l \to C H_{3} - C l (5) ∙ C H_{3} + C l_{2} \to C H_{3} - C l + ∙ C l

C l_{2} h v - \to C l^{∙} + C l^{∙}

C l^{∙} + C H_{4} \to^{∙} C H_{3} + H C l

C l^{∙} + C l^{∙} \to C l_{2}

^{∙} C H_{3} +^{∙} C l \to C H_{3} C l

C l_{2} \to 2 C l^{\cdot}

C l^{\cdot} + C H_{4} \to C H_{3} C 1 + H^{\cdot}

C 1^{\cdot} + C H_{4} \to C H_{3}^{\cdot} + H C I

H^{\cdot} + C l_{2} \to H C l + C l^{\cdot}

C H_{3}^{\cdot} + C l_{2} \to C H_{3} C I + C l^{\cdot}

C - C l

C H_{3} C l

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