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R-H+X_2\overset{hv}{\rightarrow}R-X+HX

For the above reaction, what would be the order of reaction for Primary, Secondary and Tertiary alkanes?

Option: 1

Primary=Secondary=Tertiary


Option: 2

Primary=Secondary>Tertiary


Option: 3

Tertiary>Secondary>Primary


Option: 4

Primary>Secondary=Tertiary


Answers (1)

best_answer

As we learnt

 

Preparation of haloalkane by free radical halogenation of Alkanes -

 

Alkanes undergo free radical substitution reaction when treated Cl2/Br2 in presence of sunlight.

- wherein

CH_{4}+Cl_{2}\rightarrow CH_{3}Cl+HCl

 

 Tertiary radical>Secondary radical> Primary radical in stability accounts for the order of rate of reaction.

 

Posted by

himanshu.meshram

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