The enthalpy of hydrogenation of benzene is -51.0 kcal/mol. If enthalpy of hydrogenation of 1,4-cycl — Thermodynamics and Thermochemistry Chemistry Question
Question
The enthalpy of hydrogenation of benzene is -51.0 kcal/mol. If enthalpy of hydrogenation of 1,4-cyclohexadiene and cyclohexene is -58 kcal/mol and -29 kcal/mol, respectively, what is the resonance energy of benzene?
Answer: B
💡 Solution & Explanation
Theoretical (3 isolated double bonds) = 3*(-29) = -87 kcal/mol. Actual = -51.0. Resonance energy =
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