Answer the following questions :
(i) What is meant by the chirality of compound? Give an example.

(ii) Which one of the following compounds is more easily hydrolyzed by KOH and why?
$C H_{3} C H (C l) C H_{2} C H_{3}$ or $C H_{3} C H_{2} C H_{2} C l$

(iii) Which one undergoes $S_{N} 2$ substitution reaction faster and why?
(compounds are shown in the above image)

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Solution

(i) Chirality is the property of a molecule to have non-super-imposable mirror image. These molecules contain one asymmetric carbon atom. e.g., Butan - 2- ol

(ii) $C H_{3} C H (C l) C H_{2} C H_{3}$ is more easily hydrolyzed due to the formation of more stable secondary carbocation.

(iii) $C H_{3} C H_{2} C H_{2} C H_{2} C H_{2} I$ undergoes $S_{N} 2$ substitution reaction faster because $I^{-}$ is a better leaving group due to its large size.

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