Q12 / 180 · KCET 2018 · Chemistry
Tertiary alkyl halide is practically to substitution by \( S_{N} 2 \) mechanism because of
- AInsolubility
- BInstability
- CInductive efffect
- Correct answerDSteric hindrance
Solution
In \( S_{N} 2 \) reactions, nucleophile approach to the carbon bearing the leaving group, the presence of bulky substituents
inhibits the incoming nucleophile which decrease the rate of reaction, therefore, alkyl halides having bulkier substituents
or higher degree alkyl halides preferably react through \( S N_{1} \) path. The order of reactivity for \( S_{N} 1 \) path is \( 1^{\circ}>2^{\circ}>3 \)
inhibits the incoming nucleophile which decrease the rate of reaction, therefore, alkyl halides having bulkier substituents
or higher degree alkyl halides preferably react through \( S N_{1} \) path. The order of reactivity for \( S_{N} 1 \) path is \( 1^{\circ}>2^{\circ}>3 \)
Hence, the correct answer is option: 'D'.