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 will follow these steps:

### Step 1: Write the reactions for the formation of cyclohexane and benzene.
1. The standard enthalpy of formation of cyclohexane (C6H12) can be represented as:
\[ 6C + 6H_2 \rightarrow C_6H_{12} \quad \Delta H_f = -156 \, \text{kJ/mol} \]

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