Chapter 9, Problem 9.51P

Interpretation Introduction

Interpretation:

Given $\text{E2}$ reactions are to be ranked in the order of their increasing rate.

Concept introduction:

The relative rates of $\text{E2}$ reactions depend on the strength of the base and the leaving group ability. The more stable leaving group has better leaving group ability. The rate of an $\text{E2}$ reaction generally increases as the strength of the base increases (i.e., as the ${\text{pK}}_{\text{a}}$ of the base’s conjugate acid increases). Strong bases tend to favor $\text{E2}$ reactions.