Chapter 5, Problem 5.33P

Interpretation Introduction

(a)

Interpretation: The value of $\left[\text{α}\right]$ for the given solution is to be calculated.

Concept introduction: The enantiomeric excess $\left(ee\right)$ is also known as the optical purity. It is calculated by the formula,

$ee=\frac{\left[\text{α}\right]\text{mixture}}{\left[\text{α}\right]\text{pure}\text{enantiomer}}\times 100\%$

Interpretation Introduction

(b)

Interpretation: The amount of dextrorotatory isomer and levorotatory isomer in solution are to be calculated.

Concept introduction: The enantiomeric excess $\left(ee\right)$ is also known as the optical purity. It is calculated by the formula,

$ee=\frac{\left[\text{α}\right]\text{mixture}}{\left[\text{α}\right]\text{pure}\text{enantiomer}}\times 100\%$

The value of $ee$ is helpful in calculating the amount of each enantiomer present.