A) gas
B) dry ice
C)
solid
D) liquid
2. Determine the phases of matter for the following points on the phase diagram of CO₂.
Pressure (not to scale)
72.9.
atm
5.1
atm
1 atm
Triple
SOLID point
LIQUID
a. 20.0 °C, 72.9 atm
b. -56.7 °C, 5.1 atm
c. 10.0 °C, 1.0 atm
d. -78.5 °C, 1.0 atm
e. 50.0 °C, 80.0 atm
GAS
-78.5°C -56.7 °C
Temperature (not to scale)
Carbon dioxide
Intermolecular forces
31 °C
Critical
point
Fig: 1