Organic Chemistry
Organic Chemistry
2nd Edition
ISBN: 9781118452288
Author: David R. Klein
Publisher: WILEY
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Chapter 5.4, Problem 12PTS
Interpretation Introduction

Interpretation:

To calculate the specific rotation of a given molecule.

Concept Introduction:

The specific rotation (α) is a property of a chiral chemical compound. It is defined as the change in orientation of monochromatic plane-polarize light, per unit distance concentration product, as the light passes through a sample of a concentration in solution.

The specific rotation of a molecule can be calculated by using the formula given below.

[α]Tλ=αobs(degree)l(dm).C(gmL)

alpha (α) represents the observed rotation measured with a polarimeter. l represents the length of the sample tube.     C is the concentration of a solution of a pure sample.λ is the wave length of the light.

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