TOPIC 7 - Modern analytical techniques I

Question 1

How does IR spectroscopy work?

Answer 1

1. Infrared radiation increases vibrational energy of covalent bonds in the sample.
2. The frequency of IR being absorbed depends on the atoms at either side of the bond and the position in the molecule.
3. A graph shows the intensity for different frequencies (so there’s dips in the frequendies absorbed by the bonds).