Chapter 9.4, Problem 18P

Interpretation Introduction

Interpretation:

The alkyl halide from the most reactive to least in the given ${\text{S}}_{\text{N}}\text{1}$ reaction has to be ranked.

Concept Introduction:

• Unimolecular nucleophilic substitution reaction in which the reversible ionization of alkyl halide in the presence of aqueous acetone or an aqueous ethyl alcohol provides a carbocation as an intermediate, attacked by the nucleophile to form the product is called ${\text{S}}_{\text{N}}\text{1}$ reaction.
• Relative stability of alkyl halide in S_N1 reaction: $RI>RBr>RCl>RF$