Spectroscopy

Question 1

Alkanes
C-H
C-C

Answer 1

C-H: 2800-3000

C-C: 1200

Question 2

Alkenes
=C-H
C=C

Answer 2

=C-H: 3080-3140

C=C: 1645

Question 3

Alkynes
==C-H
C==C

Answer 3

==C-H: 3300

C==C: 2200

Question 4

Aromatic
C-H
C-C

Answer 4

C-H 2900-3100

C-C: 1475-1625

Question 5

Alcohol

O-H

Answer 5

O-H: 3100-3500 (Broad)

Question 6

Ethers

C-O

Answer 6

C-O 1050-1150

Question 7

Aldehydes
(O)C-H
C=O

Answer 7

(O)C-H: 2700-2900

C=O: 1725-1750

Question 8

Ketones

C=O

Answer 8

1700-1750

Question 9

Acids
C=O
O-H

Answer 9

C=O: 1700-1750

O-H: 2900-3300 (Broad)

Question 10

Amines

N-H

Answer 10

N-H: 3100-3500 (Sharp)