Question

Homolytic fission of CH3Cl gives:

a. Methyl carbocation and chloride ion
b. Methyl carbanion and carbocation

c. Methyl and chlorine free radicals
d. A Nucleophile.


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Answer 1

The reaction (CH  3  )  3  C−Br→(CH  3  )  3  C  +  +Br  −   is an example of heterolytic fission.

The C-Br bond breaks asymmetrically and results in the formation of tert butyl carbocation and bromide anion.

This type of fission is observed for the bonds between two atoms with significant difference in the electronegativity.  

In case of homolytic fission, the bond breaks symmetrically and results in the formation of free radicals. It is observed for the bonds between two atoms with same electronegativity.  

For example, the homolytic fission in ethane forms two methyl free radicals.

CH  3  −CH  3  →2C  ∙  H  3

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Answer 2

Homolytic fission of CH3Cl gives (c) Methyl and chlorine free radicals.

Explanation:

• Homolytic fissioncan also be called as homolysis or hemolysis. It is the process where bonds of  molecules breaks into fragments equally.
• During this process a certain amount of energy gets released and absorbed and this process is called as Homolytic bond dissociation energy.

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