Arrange the following alkenes in increasing o | vedclass

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(A) The enthalpy of hydrogenation $(-\Delta H)$ is inversely proportional to the stability of the alkene. More substituted alkenes are more stable due

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$R < S < Q < P$

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(A) The enthalpy of hydrogenation $(-\Delta H)$ is inversely proportional to the stability of the alkene. More substituted alkenes are more stable due to hyperconjugation and inductive effects.Let's analyze the substitution of the double bond in each alkene:$P$: Vinylcyclohexane (monosubstituted alkene).$Q$: Methylenecyclohexane (disubstituted alkene).$R$: $1-$isopropylidenecyclohexane (tetrasubstituted alkene).$S$: $1-$methylcyclohexene (trisubstituted alkene).Stability order: $P Since enthalpy of hydrogenation is inversely proportional to stability,the increasing order of $(-\Delta H)$ is: $R < S < Q < P$.

Arrange the following alkenes in increasing order of their enthalpy of hydrogenation $(-\Delta H)$:

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