IR Spectroscopy

Question 1

What wave numbers are double carbon-oxygen bonds located at on the IR Spectrum?

Answer 1

1650-1850

Question 2

If a double carbon oxygen bond does not exist, what functional group does a U-shaped -H band above 3000 signify?

Answer 2

Alcohol?

Question 3

If a double carbon oxygen bond does not exist, what functional group does a W-shaped -H band above 3000 signify?

Answer 3

primary amine

Question 4

If a double carbon oxygen bond does not exist, what functional group does a V-shaped -H band above 3000 signify?

Answer 4

secondary amine

Question 5

If a double carbon oxygen bond does not exist, what functional group does a spike shaped -H band above 3000 and a stretch at 2100-2260 signify?

Answer 5

terminal alkyne

Question 6

If a double carbon oxygen bond and -H band above 3000 don’t exist, what functional group does a strong band at 2200 signify?

Answer 6

a carbon-nitrogen triple bond

Question 7

If a double carbon oxygen bond and -H band above 3000 don’t exist, what functional group does a weak band at 2200 signify?

Answer 7

internal alkyne

Question 8

If a double carbon oxygen bonded an -H band above 3000 don’t exist, what functional group does a band at 1350 and 1550 signify?

Answer 8

nitro

Question 9

If a double carbon oxygen bond and -H band above 3000 don’t exist, what functional group does a strong band at 1000-1200 signify?

Answer 9

ether

Question 10

If a carbon-oxygen band does exist and there is a W-shaped peak from 3000-4000, what functional group is represented?

Answer 10

primary amide

Question 11

If a carbon-oxygen band does exist and there is a V-shaped peak from 3000-4000, what functional group is represented?

Answer 11

secondary amide

Question 12

If a carbon-oxygen band does exist and there broad band from 3200-2000, what functional group is represented?

Answer 12

carboxylic acid

Question 13

If a carbon-oxygen bond does exist, there is no peak from 3000-4000, and a W-shaped peak exists at 2720 and 2820, what function group is represented?

Answer 13

aldehyde

Question 14

If a carbon-oxygen bond does exist, there is no peak from 3000-4000, and a strong band exists from 1000-1200, what function group is represented?

Answer 14

ester

Question 15

If a carbon-oxygen bond does exist, there is no peak from 3000-4000, and there are 2 double carbon-oxygen bonds at 1750 and 1850, what functional group is represented?

Answer 15

anhydride

Question 16

If there is only a carbon-oxygen double bond what functional group is represented?

Answer 16

ketone