Wednesday, March 6

Section 8: Define the following words in your notebook:
1) Phase Diagram
2) Triple Point
3) Critical Point
4) Critical Temperature
5) Critical Pressure

Then use those definitions to complete the worksheet at the bottom of the webpage. 

Section 9: Using the phase diagram for CO₂ below to answer the following questions:

1. At what temperature and pressure is the triple point for CO₂ 
2. Describe all the phase changes that would occur when CO₂ is heated from 200 K to 350 K at a constant pressure of 10 bar 
3. Describe all the phase changes that would occur when CO₂ pressure is dropped from 100 bar to 1 bar at a constant temperature of 350 K.  
4. Do some research on supercritical fluid CO₂. What is it? How is it used? Does only CO₂ have this phase?