3.3.7- optical isomerism

Question 1

What is optical isomerism

Answer 1

A form of stereoisomerism.

Question 2

What are the features of optical isomers

Answer 2

Identical physical and chemistry properties

Distinguished by ability to rotate polarised light

Question 3

What are the two forms of optical isomers called

Answer 3

Enantiomers

Question 4

How do you know if a compound has optical isomers

Answer 4

If it has no lines of symmetry

Means it will have a chiral carbon

Question 5

Definition of raemic mixture

Answer 5

An equimolar mixture of two enantiomers

Question 6

Explain how a raemic mixture is made

Answer 6

Made because attack can come from above or below plane 50% chance of attack from either direction (law of probability) therefore 50% of each enantiomer and a raemic mixture

Question 7

How does optical isomers affect animals etc

Answer 7

Amino acids can be chiral which means proteins are chiral so the two enantiomers can react differently to receptors

Question 8

Draw the two optical isomers of CH3CH(OH)C2H5

Answer 8

Draw