Within what range can you restrict the values of P and T if the following information is known about CO₂? Use Figure 8.12 to answer this question.

a. As the temperature is increased, the solid is first converted to the liquid and subsequently to the gaseous state.

b. An interface delineating liquid and gaseous phases is observed throughout the pressure range between 6 and 65 atm.

c. Solid, liquid, and gas phases coexist at equilibrium.

d. Only a liquid phase is observed in the pressure range from 10. to 50. atm.

e. An increase in temperature from ˆ’80.° to 20.°C converts a solid to a gas with no intermediate liquid phase.

Figure 8.12

Transcribed Image Text:

10000 Solid + Liquid 1000 Solid Liquid 100 Sublimation point -78.5°C at 1 atm Critical point 10 Liquid + Gas Triple point -56.6°C at 5.11 atm 0.1 - 0.01 Gas 0.001 -140 -120 -100 -80 -60 -40 -20 20 40 60 80 100 Temperature/"C Pressure/atm Solid + Gas