Welcome to ChemZipper !!!: Explain why the free radical chlorination of methane occurs nearly twelve times faster than CD4.

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Explain why the free radical chlorination of methane occurs nearly twelve times faster than CD4.

SOLUTION: Although C-H and C-D bonds are chemically identical But C-D bonds are slightly stronger than C-H honds. Therefore,∆H for abstraction of D is slightly greater than for H. Since, abstraction is the slow step, removal of H will be faster.

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