The order of reactivity 3^{circ} text{ halide | vedclass

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(B) The reactivity order $3^{\circ} 	ext{ halide} > 2^{\circ} 	ext{ halide} > 1^{\circ} 	ext{ halide} > CH_3X$ is characteristic of the $S_N1$ mech

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$S_N1$ reaction

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(B) The reactivity order $3^{\circ} 	ext{ halide} > 2^{\circ} 	ext{ halide} > 1^{\circ} 	ext{ halide} > CH_3X$ is characteristic of the $S_N1$ mechanism. In an $S_N1$ reaction,the rate-determining step is the formation of a carbocation intermediate. Since $3^{\circ}$ carbocations are more stable than $2^{\circ}$,$1^{\circ}$,and methyl carbocations due to the inductive effect and hyperconjugation,$3^{\circ}$ halides react the fastest. Conversely,$S_N2$ reactions follow the order $CH_3X > 1^{\circ} > 2^{\circ} > 3^{\circ}$ due to steric hindrance.

List-$I$ (Reagent)	List-$II$ (Product)
$A$. $KOH$ (alc)	$I$. Nitrile
$B$. $KCN$ (alc)	$II$. Ester
$C$. $AgNO_2$	$III$. Alkene
$D$. $CH_3COOAg$	$IV$. Nitroalkane

The order of reactivity $3^{\circ} \text{ halide} > 2^{\circ} \text{ halide} > 1^{\circ} \text{ halide} > CH_3X$ represents which of the following reactions?

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Match List-$I$ with List-$II$.
$1$-Bromopropane is reacted with reagents in List-$I$ to give products in List-$II$.

List-$I$ (Reagent) List-$II$ (Product)

$A$. $KOH$ (alc) $I$. Nitrile

$B$. $KCN$ (alc) $II$. Ester

$C$. $AgNO_2$ $III$. Alkene

$D$. $CH_3COOAg$ $IV$. Nitroalkane

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