Chapter 5, Problem 5.32P

Interpretation Introduction

Interpretation:

From the given specific rotation of pure compound and the solution, the percentage of enantiomeric excess $\left(\text{ee}\right)$, percentage of $\text{(+)}$ enantiomer, and percentage of $\text{(-)}$ enantiomer are to be determined.

Concept introduction:

A compound capable of rotating plane polarized light is called an optical active compound. Mixture of enantiomers with different amounts is called racemates, and the mixture of two enantiomers present in equal amount is called racemic mixture. The specific rotation of a racemic mixture is ${\text{0}}^{\text{o}}$. The enantiomeric excess is calculated using the formula below:

$\text{Specific rotation of the mixture = }\frac{\text{(\% ee)(specific rotation of pure enantiomer)}}{100}$