Chapter 15, Problem 112E

Interpretation Introduction

Interpretation:

The basicity in the gas phase is given to be defined by proton affinity of the base. The explanation corresponding to the statement that in the gas phase ${\left({\text{CH}}_{\text{3}}\right)}_3\text{N}$ is more basic than ${\text{CH}}_{\text{3}}{\text{NH}}_2$ while in solution the reverse is true is to be stated.

Concept introduction: The basic strength of base in aqueous solution increases due to better salvation of hydrogen bonding. More is the number of hydrogen bond in solution phase, more is the basic strength.

To determine: The explanation corresponding to the statement that in the gas phase ${\left({\text{CH}}_{\text{3}}\right)}_3\text{N}$ is more basic than ${\text{CH}}_{\text{3}}{\text{NH}}_2$ while in solution the reverse is true.