Isomerism

Question 1

Structural isomers

Answer 1

Structural Isomers have the same molecular formula but a different structural formula
There are 3 types of structural isomers - 1. Chain 2. Positional 3. Functional Group

Question 2

Chain isomers

Answer 2

Same molecular formula but different arrangement of the carbon skeleton.

(Change the chain of carbons, remember to make sure it is a different molecule)

Question 3

Positional isomers

Answer 3

Same molecular formula but different position of the functional group on the carbon skeleton.

(Eg. Pentan-1-ol AND Pentan-2-ol)

Question 4

Functional group isomers

Answer 4

Same molecular formula but different functional group.

(Eg. Pent-1-ene AND Cyclopentane)

Question 5

Why are there E/Z isomers

Answer 5

Beacause the double bond in the carbon can’t rotate (it is rigid)

Question 6

E

Answer 6

Opposite sides of the carbon double bond

Question 7

Z

Answer 7

Same sides of the carbon double bond

Question 8

Trans

Answer 8

E- opposite

Question 9

Cis

Answer 9

Z- same side

Question 10

How to find out if it’s E or Z

Answer 10

Look if the things bonded to the double carbon bond have higher or lower priority