Chapter 4, Problem 68P

Interpretation Introduction

Interpretation:

The specific rotation of the given compound has to be calculated.

Concept Introduction:

Specific rotation is the property of chiral compound that can be defined as the change in arrangement of monochromatic plane-polarized light per unit distance-concentration product, as the light passes through the sample of compound in a solution.

Specific rotation of compound is calculated by,

$\begin{array}{l}{\text{[α]}}_{\text{λ}}^{\text{T}}\text{=}\frac{\text{α}}{\text{l}\text{(}\text{dm)×c}\text{(g/100mL)}}\\ \\ \text{where,}\\ \\ {\text{[α]}}_{\text{λ}}^{\text{T}}\text{-specific}\text{rotation}\text{(at}\text{T}\text{and}\text{λ)}\\ \text{α-observed}\text{rotation}\\ \text{c-concentration}\text{of}\text{the}\text{sample}\\ \text{l-length}\text{of}\text{the}\text{sample}\text{tube}\end{array}$