Carbohydrates and Isomerism

Question 1

What is an isomer

Answer 1

A molecule with the same molecular formular but with atoms arranged in different way

Question 2

What are the 2 main types types of isomerism

Answer 2

Structural
Stereoisomerism

Question 3

What is a structural isomer

Answer 3

Have the same molecular formula but different structural formula (arrangement of atoms)

Question 4

What are the 3 types of structural isomerism

Answer 4

Chain
Positional
Functional group

Question 5

What is a stereoisomer

Answer 5

Have the same structural formula but different 3D spatial arrangement of atoms

Question 6

What are the 2 types of stereoisomerism

Answer 6

Cis-trans
Optical

Question 7

What is optical isomerism

Answer 7

Non superimposable mirror images of each other
Identical physical properties

Question 8

How are D and L isomers of monosaccharides distinguished

Answer 8

Based on the position of OH group on the chiral C furthest from carbonyl group

D - OH on right
L - OH on the left