Which one of the following is the chain propagation step in chlorination of methane?
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a
C•H3+C•l → CH3Cl
b
CH4+C•l → C H3Cl+H•
c
Cl−C l → 2C•l
d
CH3Cl+C•l → C•H2Cl+HCl
answer is D.
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Detailed Solution
(1) ……. Chain termination(3) ……. Chain termination(2) is false because the actual reaction occurring is CH3Cl+C•l → C•H2Cl+HClbut notCH4+C•l → C H3Cl+H•Reason …. H – Cl bond is stronger than C – Cl bond.