The two possible structures for (-)-arabinose are to be chosen. Concept introduction: Aldoses and ketoses can be oxidized using nitric acid. Upon oxidation, both the carbon atoms at the end are oxidized to COOH group. A chiral compound having at least one carbon atom which is linked to four different atoms or groups. A chiral compound does not have any elements of symmetry. Molecules containing two identical chiral centers can be achiral. A molecule containing two or more equivalent chiral centers and an internal plane of symmetry or a center of symmetry is called a meso isomer or compound. Meso compounds are optically inactive.

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Chapter 24, Problem 45DSP

Interpretation Introduction

Interpretation:

The two possible structures for (-)-arabinose are to be chosen.

Concept introduction:

Aldoses and ketoses can be oxidized using nitric acid.

Upon oxidation, both the carbon atoms at the end are oxidized to COOH group.

A chiral compound having at least one carbon atom which is linked to four different atoms or groups.

A chiral compound does not have any elements of symmetry.

Molecules containing two identical chiral centers can be achiral.

A molecule containing two or more equivalent chiral centers and an internal plane of symmetry or a center of symmetry is called a meso isomer or compound.

Meso compounds are optically inactive.

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