Chapter 7, Problem 84IP

Interpretation Introduction

Interpretation:

The reason for increase in rate of reaction while adding sodium iodide to the given reaction has to be explained.

Concept Introduction:

$S_{N}1$Reaction: It is a nucleophilic substitution reaction in which the rate determining step depends on one reactant. First step is the formation of more stable carbocation which is followed by the attack of nucleophile. Formation of more stable carbocation and the leaving group present in the substrate plays very important role in the reactivity of ${\text{S}}_{\text{N}}\text{1}$ reaction.

Leaving group: It is a fragment that leaves from a substrate with a pair of electrons via heterolytic bond cleavage.

Nucleophile: A chemical species that donates pair of electrons to positively charged substrate resulting in the formation of chemical bond.