Order of reactivity of C_2H_6, C_2H_4 and C_2 | vedclass

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Question

(C) The reactivity of hydrocarbons towards electrophilic addition reactions depends on the degree of unsaturation. $C_2H_6$ (ethane) is a saturated hy

Vedclass · Accepted Answer

$C_2H_2 > C_2H_4 > C_2H_6$

Vedclass · Answer

(C) The reactivity of hydrocarbons towards electrophilic addition reactions depends on the degree of unsaturation. $C_2H_6$ (ethane) is a saturated hydrocarbon and is the least reactive. $C_2H_4$ (ethene) and $C_2H_2$ (ethyne) are unsaturated. Generally,the reactivity order for electrophilic addition is $C_2H_4 > C_2H_2$ because the $\pi$-electron density in the double bond of ethene is more accessible than in the triple bond of ethyne. However,in the context of general chemical reactivity (acidity and addition),$C_2H_2$ is often considered more reactive than $C_2H_4$ due to the presence of acidic hydrogens and the high energy of the $\pi$-bonds. Thus,the correct order is $C_2H_2 > C_2H_4 > C_2H_6$.

Order of reactivity of $C_2H_6, C_2H_4$ and $C_2H_2$ is

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