Which one of the following is racemic compound? ans. meso-tartaric acid d,l-tartaric acid acetic acid (-) mandelic acid
Question
Which one of the following is racemic compound?
- ans.
- meso-tartaric acid
- d,l-tartaric acid
- acetic acid
- (-) mandelic acid
Solution
The racemic compound among the given options is d,l-tartaric acid.
A racemic compound is a mixture of equal amounts of two enantiomers, meaning it has no net optical activity. In the case of tartaric acid, the d,l- form is a racemic mixture because it contains equal amounts of the dextro (d-) and levo (l-) forms of the molecule.
Meso-tartaric acid, on the other hand, is not optically active because it has an internal plane of symmetry. Acetic acid and (-) mandelic acid are not racemic because they do not consist of a 1:1 mixture of enantiomers.
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