IIT/JEE Chemistry Practice #27: Resonance Energy

The video tutorial explores the concept of resonance energy in benzene. It begins by introducing the standard molar enthalpies of formation for cyclohexane and benzene, and the enthalpy of hydrogenation for cyclohexene. The tutorial explains how to estimate the resonance energy of benzene by comparing expected and actual enthalpy changes during hydrogenation. The expected enthalpy is calculated by tripling the enthalpy of hydrogenation of cyclohexene, while the actual enthalpy is derived from standard molar enthalpies of formation. The difference between these values gives the resonance energy, highlighting benzene's lower energy due to aromaticity.

What is the actual experimentally determined value for the enthalpy change when benzene is completely hydrogenated to cyclohexane?

How do you calculate the resonance energy of benzene using the expected and actual values of enthalpy change?