Which step is chain propagation step in the following mechanism? ( i ) C l 2 → h v C l ⋅ + C l ⋅ ( i i ) C l ⋅ + C H 4 → ⋅ C H 3 + H C l ( i i i ) C l ⋅ + C l ⋅ → C l 2 ( i v ) ⋅ C H 3 + ⋅ C l → C H 3 C l

Question

Which step is chain propagation step in the following mechanism? ( i ) C l 2 → h v C l ⋅ + C l ⋅ ( i i ) C l ⋅ + C H 4 → ⋅ C H 3 + H C l ( i i i ) C l ⋅ + C l ⋅ → C l 2 ( i v ) ⋅ C H 3 + ⋅ C l → C H 3 C l, (i), (ii), (iii), (iv)

MARKS App · Accepted Answer

Photo chlorination of methane occurs in three steps i.e. initiation, propagation and termination. Chain propagating step is Cl ⋅ + CH 4 → C . H 3 + HCl .

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