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Chapter 23: Problem 1

An equimolar mixture of \((+)\) tartaric acid and \((-)\) tartaric acid is called (a) enantiomer (b) optically active mixture (c) racemic mixture (d) asymmetric mixture

Short Answer

Expert verified
The correct answer is (c) racemic mixture

Step by step solution

01

Understanding the Definitions

First, take note of the definitions of the available terms. An enantiomer refers to one of a pair of molecules that are mirror images of each other but are not identical, much like left and right hands. An optically active mixture refers to a substance or mixture that rotates the plane of polarised light due to chiral molecules. A racemic mixture, which is also optically inactive, refers to an equal mixture of left- and right-handed enantiomers of a chiral molecule. An asymmetric mixture, though not a standard term in chemistry, would imply a non-equal mixture of enantiomers.
02

Match Definitions to the Scenario

Now, consider the actual exercise, which describes an equimolar, or equal proportion, mixture of (+) tartaric acid and (-) tartaric acid. Comparing this to the definitions from Step 1, this matches the definition of a racemic mixture.

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