At what phase or phases could water exist at 4.579mm pressure and 0.0098°C?
A) solid phase
B) liquid phase
C) solid, liquid and gas phases
D) no phases are present at this point
The correct answer is A. The water at this conditions is in the solid phase. This can be verified by using a phase diagram. A phase diagram is a figure which shows the phases of a certain substance at a specific temperature and pressure.
