One way to produce very pure oxygen and nitrogen is to separate air using a distillation process. For such a separation determine the following:

1. Find the normal boiling point (at 1 atm pressure) of nitrogen and oxygen.

2. For a distillation column operating at 1 atm pressure, what would be the top and bottom temperatures and top and bottom compositions of a distillation column that separates air into nitrogen and oxygen? (For this problem, you may assume that air contains only nitrogen and oxygen and that pure components leave at the top and bottom of the column.)

3. At what pressure can oxygen and nitrogen be liquefied at ambient temperature (say, 40°C)?

4. What does the answer to Part (c) tell you about the potential to distill air at ambient conditions?