6.1.1: Optical Isomerism

Question 1

Which form isomerism is optical isomerism

Answer 1

stereoisomerism

Question 2

Stereoisomerism

Answer 2

Stereoisomers have the same structural formula but a different arrangement of atoms in space.

Question 3

Chiral carbon atom

Answer 3

A carbon atom with four different groups attached to it.

Question 4

Chiral also known as

Answer 4

asymmetric

Question 5

Optical isomers

Answer 5

Two molecules with a different arrangement of groups around the chiral carbon atom which are mirror images.

Question 6

Enantiomers

Answer 6

optical isomers

Question 7

Enantiomers can’t be?

Answer 7

superimposed

Question 8

Achiral

Answer 8

molecules that can be superimposed

Question 9

Plane polarised light

Answer 9

Normal light that has been passed through a polarising filter which means that all light vibrates in the same plane.

Question 10

Optical isomers are…

Answer 10

optically active

Question 11

Optical isomers effect on plane polarised light

Answer 11

Rotate the plane of the light, 2 enantiomers rotate plane polarised light in opposite directions, clockwise and anticlockwise.

Question 12

Racemate also known as

Answer 12

racemic mixture

Question 13

Racemate

Answer 13

Contains equal quantities of each enantiomer of an optically active compound and don’t show any optical activity

Question 14

Reacting two achiral products can produce…

Answer 14

a racemic mixture of a chiral product

Question 15

Why do two enantiomers cancel out each other’s light rotating effect?

Answer 15

When two molecules react, there is equal chance of forming each of the enantiomers