O. Chem Ii - Quiz 3

Front 1

What is required for a bond to give an infrared absorption?

Back 1

Change in bond dipole during vibration.

Front 2

Which of the following bonds (circled) gives the weakest (or no) abscence in the infrared spectrum?

Back 2

2

Front 3

Which of the following compounds gives an infrared spectrum with peaks at 3000-3500 cm-1 and ~1750 cm-1?

Back 3

3

(3000-3500 cm-1; OH

1750 cm-1; C=O)

Front 4

Which of the following compounds gives a carbonyl bond absorption at the lowest frequency?

Back 4

2

Front 5

Select a structure from the list below that matchcs the IR spectrum.

Back 5

D

Front 6

Absorption of UV-visible energy cecily by a molecule results in.

Back 6

Electronic transitions

Front 7

Back 7