Ncert Exercises & Solutions

The process of converting alkyl halides into alcohols involves .........

1. Addition reaction

2. Substitution reaction

3. Dehydrohalogenation reaction

4. Rearrangement reaction

Hint: Halide is replaced by -OH group

An addition reaction is a reaction where two or more molecules combine to form a larger one. These reactions occur to change the unsaturated compound to saturated compound. In dehydrohalogenation reaction, alkyl halides give alkenes.

Rearrangement gives the structural isomers of the reactant while in substitution reaction one of the group or an atom is replaced by other group. Therefore, the process of converting alkyl halides into alcohols involves substitution reaction. The reaction is as follows:

$R - X \overset{{OH}^{-}}{\to} R - OH$
$Alkyl halide Alcohol$

Reaction of alkyl halides
Primary alkyl halides $- {S_{N}}^{2}$
Secondary alkyl halides $- {S_{N}}^{1}$ or ${S_{N}}^{2}$ mechanism

Tertiary alkyl halides — ${S_{N}}^{1}$

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