Steam Tables: Interactive Simulation
Try to predict the behavior when a parameter changes before using a slider to change that parameter. For this simulation, a screencast is provided to explain how to use it.
Phase Behavior on a Pressure-Volume Diagram

Try to answer these questions before determining the answer with the simulation. We suggest that you write down the reasons for your answers.
- How do the number of phases change as the molar volume increases at constant pressure?
- Is there a way to go from liquid to vapor without going through any phase boundaries?