A student isgiven a solution labeled only as 2,3-dihydroxybutane. She used the polarimeter to determine its optical rotation, and found that the solution was not optically active. Draw the absolute configuration of theisomer of 2,3-dihydroxybutane that would give zero optical rotation.

A student isgiven a solution labeled only as 2,3-dihydroxybutane. She used the polarimeter to determine its optical rotation, and found that the solution was not optically active. Draw the absolute configuration of theisomer of 2,3-dihydroxybutane that would give zero optical rotation.

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter56: Carbohydrates

Section: Chapter Questions

Problem 7Q

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Concept explainers

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.

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An aqueous solution containing 10 g of an optically pure compound was diluted to 500 mL with water and was found to have a specific rotation of −121º. If this solution were mixed with 500 mL of a solution containing 3 g of a racemic mixture of the compound, what would the specific rotation of the resulting mixture of the compound? What would be its optical purity?
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