Question

In SN2 reaction the hydrolysis of alkyl halides show
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Answer 1

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Alkyl halides on alkaline hydrolysis form alcohols. In KI ,iodide ion being larger in size ,have greater polarizability. Due to which it tend to replace other halogen from alkyl halide to form new bond age an intermediate .Latter Hydroxide ion come to attack on the site .If alkyl group is tertiary, then it follows SN1 and in case of normal alkyl group reaction follows SN2. Iodide ion in both cases get replaced easily ,as it is better leaving group. Hence hydrolysis is facilitated.