Which of the following alkyl halides is hydrolysed by S N 1 mechanism?

1. $\mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{l}$
2. $\mathrm{C}{\mathrm{H}}_3\mathrm{C}{\mathrm{H}}_2\mathrm{C}\mathrm{l}$
3. $\mathrm{C}{\mathrm{H}}_3\mathrm{C}{\mathrm{H}}_2\mathrm{C}{\mathrm{H}}_2\mathrm{C}\mathrm{l}$
4. ${\left(\mathrm{C}{\mathrm{H}}_3\right)}_3\mathrm{C}\mathrm{C}\mathrm{l}$

Solution

${\mathrm{S}}_{\mathrm{N}}1$ reaction is favoured by stability of carbocation i.e. tertiary > secondary > primary.



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Asked in: JEE-TOPICTESTS-CHEMISTRY

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