Which stage in the free radical substitution of methane by chlorine will have the lowest activation
energy?
A CH3• + Cl 2 → CH3Cl + Cl •
B Cl • + Cl • → Cl 2
C Cl • + CH4 → CH3• + HCl
D Cl 2 → Cl • + Cl •

Answer :

I am pretty sure that the stage in the free radical substitution of methane by chlorine which will have the lowest activation energy is B Cl • + Cl • → Cl 2. I choose this option because during termination there is no breaking of bonds within two reactive  radicals which are joined together.

Do hope it will help you!


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