Which of the following compounds has the leas | vedclass

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(B) The heat of hydrogenation $(\Delta H_{H_2})$ is inversely proportional to the stability of the alkene. More substituted alkenes are more stable du

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$2-$phenyl$-3-$methyl$-2-$pentene derivative (highly substituted alkene)

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(B) The heat of hydrogenation $(\Delta H_{H_2})$ is inversely proportional to the stability of the alkene. More substituted alkenes are more stable due to hyperconjugation and inductive effects,thus they have lower heat of hydrogenation. Comparing the structures: $A$ is a terminal alkene. $B$ is a tetrasubstituted alkene (most substituted). $C$ is a trisubstituted alkene. $D$ is a monosubstituted terminal alkene. Among the given options,the compound in option $B$ is the most substituted alkene,which makes it the most stable and therefore it has the least heat of hydrogenation.

Which of the following compounds has the least heat of hydrogenation?

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