Question

The probability factor for $3^o,2^{o}and{1}^o$ $H$ atom is 5.0 : 3.8 : 1.0 at $25{}^{o}C$ for chlorination. Isobutane when reacted with chlorine in the presence of ultra-violet radiations yields 2 products. The percentage of the major product is $X$% and that of the minor product is $Y$%. Then, the value of $X-Y$ is .

Answer 1

The compound having the highest percentage yield will be the major product.

The percentage yield when chlorination occurs at the $3^0$ carbon $=\frac{5}{5+9}\times 100=35.71$

The percentage yield when chlorination occurs at the $1^0$ carbon $=\frac{9}{5+9}\times 100=64.28$ $⟶X-Y=28.58$