Carbon dioxide unusual because it has no liquid phase at normal atmospheric pressure. Instead, the solid sublimes directly to the gas phase. To obtain the liquid phase at room temperature, a pressuer of _____`MP` a must be applied.

Water exists in liquid phase at 30^@C at 1 atmospheric pressure. How would you convert this water to vapour form without increasing its temperature ?

Two liquid A and B form an ideal solution at temperature T. When the total vapout pressure above the solution is 400 torr , the mole fraction of A in the vapour phase is 0.40 and in the liquid phase 0.75. What are the vapour pressure of pure A and pure B at temperature T?

At what temperature and pressure can the solid, liquid and vapour phases of C0_2 co-exist in equilibrium?

Answer the following questions based on the P-T phase diagram of carbon dioxide: What are the critical temperature and pressure for CO_@ ? What is their significance?