Vapor-Liquid Equilibrium for Non-Ideal Solutions: Interactive Simulations
These simulations will run in your browser. Try to predict the behavior when a parameter changes before using a slider to change that parameter. Screencasts below explain how to use the simulations.
Vapor Pressure of Binary Solutions

Try to answer these questions before determining the answer with the simulation. We suggest that you write down the reasons for your answers.
- As the solution deviates more from Raoult’s law, does the partial pressure of component B deviate more at low or high values of \(x_b\)?
- Under what type of deviations from Raoult’s law would an azeotrope form?
- Is Henry’s law behavior for component A observed at low or high mole fractions of component B?
Try to answer these questions before determining the answer with the simulation. We suggest that you write down the reasons for your answers.
- This system has a maximum-pressure azeotrope. Does it have a minimum- or maximum-temperature azeotrope?
- If the temperature increases, how does the azeotrope change? Does its pressure increase or decrease?