IR spectroscopy

Question 1

Is IR a quantitative or qualitative technique?

Answer 1

qualitative

Question 2

What is spectroscopy?

Answer 2

Study of the interaction between a radiation (wave) and matter (molecules etc)

Question 3

Is the position of atoms stationary?

Answer 3

No

Question 4

How many modes of vibration seen in IR?

Answer 4

2

Question 5

What is resonance?

Answer 5

Frequency of the absorbed radiation matches the frequency of the bond or group that vibrate

Question 6

What can resonance be related to?

Answer 6

The strength of the bond and the mass of the atoms at either end of it

Question 7

What is the frequency of vibration given by?

Answer 7

Hooke’s law

Question 8

Name the functional group variations

Answer 8

C-H: aldehyde
O-H: alcohol and phenols
N-H: amine and ammonium