What you’ll learn4 learning objectivesChoose one objective for a focused lesson, or study the complete topic.29.4.1Enantiomers have identical physical/chemical• Understand: enantiomers have identical physical/chemical properties apart from their ability to rotate plane polarised light and their potential biological activitySyllabus objective29.4.2Terms: optically active and racemic mixture• Use terms: optically active and racemic mixtureSyllabus objective29.4.3Effect on plane polarised light of the two• Describe the effect on plane polarised light of the two optical isomers of a single substanceSyllabus objective29.4.4Relevance of chirality to the synthetic• Explain the relevance of chirality to the synthetic preparation of drug molecules including:- (a) the potential different biological activity of the two enantiomers- (b) the need to separate a racemic mixture into two pure enantiomers- (c) the use of chiral catalysts to produce a single pure optical isomer (Candidates should appreciate that compounds can contain more than one chiral centre, but knowledge- of meso compounds and nomenclature such as diastereoisomers is not required.)Syllabus objective