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Question
Explain optical activity of 2-chlorobutane
Solution
- The property of a substance by which it rotates the plane of polarization of incident plane-polarized light is known as optical activity.
- 2-Chlorobutane has one chiral carbon atom and thus, exists as a pair of enantiomers which are non-superimposable mirror images of each other.
- These mirror images are referred to as optical isomers; which differ from each other in terms of a measurable property called optical activity. The structure of 2-chlorobutane and its mirror image can be represented as,
- Thus, 2-chlorobutane will show optical activity and in accordance with the direction of optical rotation, one isomer will be dextrorotatory, and the other will be laevorotatory.
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