Chapter 2, Problem 6Q

Interpretation Introduction

(a)

Interpretation:

Atom economy of the $\text{HBr/HOOH}$ method for the addition of bromine to $trans\text{-stilbene}$ is to be calculated.

Concept introduction:

Atom economy is a quantitative measure that explains conversion efficiency of chemical process in terms of reactant atoms involved and desired products formed. It is the percentage of atomic mass of all reagents that appears in the final product with the assumption that the yield in the reaction is $100\%$ .

The formula to calculate the atom economy is calculated as follows:

  $\text{atom economy}= \frac{{\text{MW}}_{\text{product}}}{{\text{MW}}_{\text{reactant}}}\times 100\%$

Where,

• ${\text{MW}}_{\text{product}}$ is the molecular weight of the product.
• ${\text{MW}}_{\text{reactant}}$ is the molecular weight of reactants.

Interpretation Introduction

(b)

Interpretation:

The reaction efficiency of the $\text{HBr/HOOH}$ method for the addition of bromine to $trans\text{-stilbene}$ is to be calculated.

Concept introduction:

Reaction efficiency is a measure of the efficiency of the reaction. It is the product of atom economy of the reaction and yield produced in the reaction.

The formula to calculate the reaction efficiency of the reaction is as follows:

  $\text{reaction efficiency}=\left(\text{atom economy}\right)\left(\text{yield}\right)$