Chapter 14, Problem 14.44P

Interpretation Introduction

Interpretation:

Whether molecule $\text{G}$ or $\text{H}$ has more exothermic heat of hydrogenation is to be determined.

Concept introduction:

The heat of hydrogenation is the amount of energy released when a hydrogen molecule is added to a double or triple bond. It is based on the stability of $\text{π}$ systems. The aromatic molecules are more stable compared to nonaromatic compounds. The aromatic molecule has less heat of hydrogenation than the nonaromatic compound having conjugation with the same number of $\text{π}$ electrons.