IR

Question 1

What functional group will show up on an IR spectroscopy when there is a peak around 1500-1600 cm-1?

Answer 1

Aromatic

Question 2

What functional group will show up on an IR spectroscopy with a peak at 1710cm-1?

Answer 2

Carbonyl [C=O]

Question 3

What functional group will show up on an IR spectroscopy with 2 peaks at 2710 and 2810cm-1 and 1 peak at 1710cm-1?

Answer 3

aldehyde

Question 4

What functional group will show up on an IR spectroscopy with a peak just to the RIGHT of 3000cm-1?

Answer 4

sp3 C-H

Question 5

What functional group will show up on an IR spectroscopy with a peak just to the left of 3000cm-1?

Answer 5

sp2 C-H

Question 6

What functional group will show up on an IR spectroscopy with a peak around 3300cm-1?

Answer 6

sp C-H or NH3

Question 7

What functional group will show up on an IR spectroscopy with a peak between 2100-2300cm-1?

Answer 7

CN or sp C-C

tripple bonds

Question 8

What functional group will show up on an IR spectroscopy with a 2 sharp peaks at 3300 and 1710cm-1?

Answer 8

amide

Question 9

What functional group will show up on an IR spectroscopy with a smooth broad peak around 3400cm-1?

Answer 9

O-H (alcohol)

[amine groups are sharp peaks]

Question 10

What functional group will show up on an IR spectroscopy with a very broad, not smooth, ugly peak from 2500-3500cm-1?

Answer 10

carboxylic acid