Name:

Section:

1. This experiment
2. The appropriate sections of your text.

1. A carbon-oxygen double bond vibrates with an energy of about 1720 cm^-1. With what energy would you expect a carbon-sulfur double bond to vibrate?
2. Calculate the reduced mass, m, for an O-H bond; for an N-H bond; for a C-H bond. What is primarily responsible for the differences in frequency of vibration of these 3 bond types?
3. For each molecule, indicate where you would expect to see distinctive vibrations in the 4000-1400 cm^-1 region of the infrared spectrum:
   
   (CH₃)₂NH
   (CH₃)₂CH(OH)
   H₂N-CH(CH₃)-COOH