
Concept explainers
(a)
Interpretation: The optical activity of the given structure of tartaric acid should be determined.
Concept Introduction: The organic compounds with same molecular formula and different structural formula are known as isomers of each other.
Stereoisomers are type of isomers with same molecular formula and structural formula but they have different optical activity towards plane polarized light.
The optical isomers have certain essential conditions such as they must have asymmetric C atoms and should not have plane of symmetry in the molecule.
(b)
Interpretation: The optical active forms of tartaric acid should be determined.
Concept Introduction: The organic compounds with same molecular formula and different structural formula are called as isomers of each other.
Stereoisomers are type of isomers with same molecular formula and structural formula but they have different optical activity towards plane polarized light.
The optical isomers have certain essential conditions such as they must have asymmetric C atoms and should not have plane of symmetry in the molecule.

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Chapter 21 Solutions
Chemical Principles
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