The order of increasing reactivity towards HC | vedclass

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(A) The reactivity of alkenes towards electrophilic addition of $HCl$ depends on the stability of the intermediate carbocation formed.
$(1)$ $CH_2 =

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$1 < 3 < 2$

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(A) The reactivity of alkenes towards electrophilic addition of $HCl$ depends on the stability of the intermediate carbocation formed.
$(1)$ $CH_2 = CH_2$ forms a primary carbocation $(CH_3-CH_2^+)$,which is the least stable.
$(3)$ $CH_3CH = CHCH_3$ forms a secondary carbocation $(CH_3-CH_2-CH^+-CH_3)$,which is more stable than the primary one.
$(2)$ $(CH_3)_2C = CH_2$ forms a tertiary carbocation $((CH_3)_2C^+-CH_3)$,which is the most stable.
Since the stability of the carbocation intermediate follows the order: $1^\circ < 2^\circ < 3^\circ$,the reactivity towards $HCl$ follows the same order: $(1) < (3) < (2)$.

The order of increasing reactivity towards $HCl$ of the following compounds will be:
$(1)$ $CH_2 = CH_2$
$(2)$ $(CH_3)_2C = CH_2$
$(3)$ $CH_3CH = CHCH_3$

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The order of increasing reactivity towards $HCl$ of the following compounds will be: $(1)$ $CH_2 = CH_2$ $(2)$ $(CH_3)_2C = CH_2$ $(3)$ $CH_3CH = CHCH_3$