Chapter 11, Problem 11.11P

Look at the phase diagram of CO₂ in Figure11.13, and describe what happens to a CO₂ sample when the following changes are made:

1. The temperature is increased from $-100°C$ to $0°C$at a constant pressure of 2 atm.
2. The pressure is reduced from 72 atm to 5.0 atm at a constant temperature of 30 $°C$ .
3. The pressure is first increased from 3.5 atm to 76 atm at $-10°C$ , and the temperature is then increased from $-10°C$to $45°C$ .