Question

Resonance energy of benzene using heat of hydrogenation

Answer 1

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In other words, the stability gain by electron delocalization due to resonance versus the absence of such delocalization. The resonance energy of benzene is 36 kcal mol-1. To measure the resonance energy of benzene we start with the enthalpy of hydrogenation for cyclohexene, which is -28.6 kcal mol-1.