Chapter 21.5, Problem 35SSC

Interpretation Introduction

Interpretation:

The properties of benzene that are separate it from other alkene compounds are to be mentioned.

Concept introduction:

Benzene is a different compound than other alkenes because its mesomeric effect is much stronger than other alkenes.

Answer to Problem 35SSC

The different properties of benzene are mostly due to the resonance system of its pi electrons.

Explanation of Solution

Benzene is different from other alkenes in the following ways:

• Unlike other alkenes, benzene does not readily undergo addition reaction.
• Benzene has a characteristic pleasant smell which other alkenes don’t have.
• Benzene shares its pi electrons equally among all carbon atoms unlike alkenes.