Answer to Question #215680 in Physical Chemistry for Archu

Question

calculate the amount of energy by which benzene is more
stable as compared to one Kekule structure:
∆

Answer 1

The lower down a substance is, the more energetically stable it is. This means that real benzene is about 150 kJ mol^-1 more stable than the Kekulé structure gives it credit for. This increase in stability of benzene is known as the delocalisation energy or resonance energy of benzene.