The standard molar enthalpies of formation of cyclohexane (I) and benzene(I) at `25^(@)C` are `-156` and `+49 KJ mol^(-1)` respectivelyl. The standard enthalpy of hydrogentation of cyclohexene (I) at `25^(@)` is `-119 KJ mol^(-1)`. Use these data to estimate the magnitude of the resonance energy of benzene.

Explanation

To estimate the magnitude of the resonance energy of benzene using the given data, we can follow these steps:

### Step 1: Write down the given data.
- Standard molar enthalpy of formation of cyclohexane (C6H12) = ΔH_f (C6H12) = -156 kJ/mol
- Standard molar enthalpy of formation of benzene (C6H6) = ΔH_f (C6H6) = +49 kJ/mol
- Standard enthalpy of hydrogenation of cyclohexene (C6H10) = ΔH_hydrogenation (C6H10) = -119 kJ/mol

### Step 2: Write the reaction for the hydrogenation of cyclohexene.
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