1. Infrared spectroscopy: functional groups Keywords: infrared, radiation, absorption, spectroscopy

2. Identify, using C=O and O–H absorptions, an alcohol, an aldehyde or ketone and a carboxylic acid. Learning objective

3. The information generated from an infrared spectrum can be used to identify the functional groups in a molecule using a reference data sheet. You will need to identify the presence of these functional groups: AlcoholsHydroxylO-H3200-3550 Aldehydes + ketonesCarbonylC=O1640-1750 Carboxylic acidCarboxylC-O1000-1300 C=O1640-1750 O-H2500-3300 Organic compoundsC-H~3000

4. Alcohols

5. Aldehydes and ketones

6. Carboxylic acids

7. Task:

8. StretchO-HC-HC=OC-O A lcohols C arbonyls C arboxylics

19. Stretch O-H 2500-3300 C-H 2850-3100 C=O 1840-1750 C-O 1000-1300 A lcohols 3000-3300 C arbonyls C arboxylics Very Broad