Chapter 27, Problem 12E

Interpretation Introduction

(a)

Interpretation:

To write the rate expression for the reaction.

Concept introduction:

The given E1 reaction is as follows:

${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}\text{C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}{\text{Br+CH}}_3\text{OH}\to {\text{CH}}_3\text{CH=C}{\left(\text{CH}{\text{3}}_{}\right)}_{\text{2}}{\text{Br}}^{-}+{\text{CH}}_{\text{3}}{\text{OH}}_{\text{2}}{}^{\text{+}}$

Interpretation Introduction

(b)

Interpretation:

To draw the reaction profile of the reaction.

Concept introduction:

Potential-energy profile diagram describe mechanism of a reaction. This diagram shows the changing potential energy between reactant and product that occur during a chemical reaction.

Interpretation Introduction

(c)

Interpretation:

To write the effect on the reaction on doubling the concentration of ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}\text{C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{Br}$.

Concept introduction:

In E1 reaction rate depends on the concentration of substrate. The substrate is directly proportional to the reaction rate. So, rate of the reaction becomes doubled when concentration of ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}\text{C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{Br}$ is doubled.

Interpretation Introduction

(d)

Interpretation:

To write the effect on the reaction on double the concentration of ${\text{CH}}_{\text{3}}\text{OH}$.

Concept introduction:

In E1 reaction rate depends on concentration of substrate not in the concentration of ${\text{CH}}_{\text{3}}\text{OH}$. Therefore, on double the concentration of ${\text{CH}}_{\text{3}}\text{OH}$ there is no effect on rate.