Ir Spectroscopy Worksheet With Answers printable pdf download

Ir Spectroscopy Worksheet With Answers

Friday Worksheet

Name: ……………….

IR spectroscopy

1) Consider the following statements.

Valence electrons in metal atoms absorb energy and are excited to higher energy

levels.

ii.

Valence electrons in metal atoms release energy as they return from high energy

levels to low energy levels.

iii.

Nucleons absorb radio waves and are excited to higher energy spin states.

iv.

Bonds present in a molecule stretch or bend by absorbing energy of specific

wavelength.

Bonding and non-bonding valence electrons only absorb energy and are promoted

to a higher energy state.

vi.

The energy absorbed depends on the mass of the atoms forming a bond.

a) Which of the statements above relate to IR spectroscopy ?

iv, v

b) Which of the statements above relate to NMR spectroscopy ?

iii

c) Which of the statements above relate to UV-visible spectroscopy ?

2) How can IR spectroscopy be used to distinguish

between compounds “A” and “B” shown on the right?

The IR spectrum for “A” will have a strong absorbance at

1000 -1300 indicating an C-O bond and “B” should not.

3) A compound has the molecular formula C

. Its IR and

HNMR spectra are shown below.

Ir Spectroscopy Worksheet With Answers