Chapter 9, Problem 9.38P

Interpretation Introduction

Interpretation:

It is to be explained whether the given reaction is reversible or irreversible under the given conditions.

Concept introduction:

Under given conditions, a substitution reaction (${\text{S}}_{\text{N}}\text{2}$ reaction) always competes with an elimination reaction ($\text{E2}$ reaction). Whether a reaction is reversible or irreversible can often be determined by examining the charge stability of overall reactants and products. The greater charge stability of products over the reactant leads to an irreversible reaction (free energy of the reaction is substantially negative), on the other hand, comparable charge stabilities of products and reactants leads to a reversible reaction ((free energy of the reaction is not substantially negative).