The reactivities of methyl chloride,propyl ch | vedclass

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Question

(A) The reactivity of alkyl halides towards nucleophilic substitution reactions depends on the stability of the carbocation intermediate (in $S_N1$) o

Vedclass · Accepted Answer

$Methyl$ $chloride$ $>$ $propyl$ $chloride$ $>$ $chlorobenzene$

Vedclass · Answer

(A) The reactivity of alkyl halides towards nucleophilic substitution reactions depends on the stability of the carbocation intermediate (in $S_N1$) or steric hindrance (in $S_N2$).$Methyl$ $chloride$ $(CH_3Cl)$ is a primary halide with minimal steric hindrance,making it highly reactive in $S_N2$ reactions.$Propyl$ $chloride$ $(CH_3CH_2CH_2Cl)$ is also a primary halide but has more steric hindrance than $methyl$ $chloride$,making it slightly less reactive.$Chlorobenzene$ is the least reactive because the $C-Cl$ bond acquires partial double bond character due to resonance,and the $sp^2$ hybridized carbon atom is more electronegative,making the bond shorter and stronger.Therefore,the order of reactivity is: $Methyl$ $chloride$ $>$ $propyl$ $chloride$ $>$ $chlorobenzene$.

The reactivities of $methyl$ $chloride$,$propyl$ $chloride$ and $chlorobenzene$ are in the order:

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