Optical activity ■ Chiral compounds exhibit optical activity and are said to be optically active.Achiral compounds are optically inactive Optical activity is the ability of a compound to rotate the plane of polarized light Enantiomers of an enantiomeric pair are identical in all their physical properties except optical activity Unpolarized Light source Achiral Polarized compound Sample cell AnalyzerOptical Activity „ Chiral compounds exhibit optical activity and are said to be optically active. Achiral compounds are optically inactive „ Optical activity is the ability of a compound to rotate the plane of polarized light „ Enantiomers of an enantiomeric pair are identical in all their physical properties except optical activity