Optical isomerism

Question 1

How to find Chiral centre

Answer 1

1. Find the carbon atom with 4 different groups surrounding them
2. Draw as a tetrahedral shape
3. Draw mirror image to show two different enantiomers

Question 2

Optical isomerism

Answer 2

Form of stereoisomerism

Same structural formula

Different arrangements of atoms in space

Question 3

Chiral

Answer 3

4 different groups attached to a carbon atom

Can arrange these groups in 2 different ways

Forms 2 enantiomers

Question 4

Enantiomers

Answer 4

Mirror images of each other which are non superimposable

Question 5

Race mate

Answer 5

Equal amounts of each enantiomer making a racemic mixture

Don’t rotate plane polarised light

2 enantiomers rotate light in opposite directions and cancels out

Question 6

Optically active

Answer 6

Will rotate plane polarised light

Question 7

Racemic mixture

Answer 7

Formed when 2 chiral substances are reacted together

When the molecules react there’s an even chance of forming each enantiomer

Question 8

Plane polarised light

Answer 8

Pass normal light through a Polaroid filter to produce plain polarised light

It oscillates in one direction