Question Bank [2022] — Chemistry STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryQuestion Bank [2022]2 Marks
Question
Explain optical activity of 2-chlorobutane
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Answer
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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