The order of increasing reactivity of the following compounds towards $H C l$ will be
$(1)$ $C H_{2} = C H_{2}$
$(2)$ $(C H_{3})_{2} C = C H_{2}$
$(3)$ $C H_{3} C H = C H C H_{3}$

Question

The order of increasing reactivity of the following compounds towards H C l will be 1 C H 2 = C H 2 ( 2 ) ( C H 3 ) 2 C = C H 2 3 C H 3 C H = C H C H 3

Aicharya · Accepted Answer

Compounds: 1. $\mathrm{CH}_2=\mathrm{CH}_2$ (Ethene) 2. $\left(\mathrm{CH}_3ight)_2 \mathrm{C}=\mathrm{CH}_2$ (Isobutene) 3. $\mathrm{CH}_3 \mathrm{CH}=\mathrm{CHCH}_3$ (2-Butene) Reaction Mechanism: The addition of HCl to an alkene occurs via the formation of a carbocation intermediate. The stability of the resulting carbocation determines the reactivity towards HCl. More stable carbocations lead to a faster reaction. Carbocation Stability: 1. Primary carbocation $\left(1^{\circ}ight)$ — least stable 2. Secondary carbocation $\left(2^{\circ}ight)$ - more stable 3. Tertiary carbocation $\left(3^{\circ}ight)$ — most stable

The order of increasing reactivity of the following compounds towards H C l will be 1 C H 2 = C H 2 ( 2 ) (…

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