When isobutane is treated with Cl_2 in sunlig | vedclass

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(A) The reaction of isobutane with $Cl_2$ in the presence of sunlight (hv) proceeds via a free radical mechanism. Isobutane has $9$ primary $(1^o)$ hy

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$1^o$ alkyl chloride

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(A) The reaction of isobutane with $Cl_2$ in the presence of sunlight (hv) proceeds via a free radical mechanism. Isobutane has $9$ primary $(1^o)$ hydrogen atoms and $1$ tertiary $(3^o)$ hydrogen atom. The relative reactivity of $1^o$,$2^o$,and $3^o$ hydrogen atoms towards chlorination is approximately $1 : 3.8 : 5$. For $1^o$ hydrogen atoms: $	ext{Number of } H 	imes 	ext{relative rate} = 9 	imes 1 = 9$. For $3^o$ hydrogen atom: $	ext{Number of } H 	imes 	ext{relative rate} = 1 	imes 5 = 5$. Since the product of the number of hydrogen atoms and their relative reactivity is higher for the $1^o$ position $(9 > 5)$,the $1^o$ alkyl chloride (isobutyl chloride) is the major product.

When isobutane is treated with $Cl_2$ in sunlight,the major product is

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