(+) Tartaric acid and Meso tartaric acid are tautomers
(+) Tartaric Acid and (−) Tartaric acid are Enantiomers
(+) Tartaric acid and (−) Tartaric Acid are Diastereoisomers
(+) Tartaric acid and Meso tartaric acid are Diastereoisomers
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Solution
The correct option is D
(+) Tartaric acid and Meso tartaric acid are Diastereoisomers
Explanation of the correct answer:
The correct answer is option D:
Tartaric acid has two asymmetric centers, but only four "isomers" exist - two of these are equivalent and collectively known as meso, which is not optically active—and the other two are D- and L- mirror copies, or enantiomers.
A diastereomer of the other types is the meso form.
Explanation of the incorrect answers:
Options A, B, and C:
Diastereomers are representations of substances with the same molecular formula and arrangement of bound components that cannot be superimposed or mirrored.
Enantiomers and diastereomers that fall within the broader concept of isomerism, which frequently involves at least two species being compared, are referred to as stereoisomers.
Diastereomers are stereoisomers that are not mirror images of each other.
Thus, they arise when one or more (but not all) of the equivalent (related) stereocenters of two or more stereoisomers of the same chemical have distinct configurations and are not mirror images of one another.
Hence, option D is correct, i.e., (+) Tartaric acid and Meso tartaric acid are Diastereoisomers.
