Raoult's Law and Vapor-Liquid Equilibrium: Interactive Simulations
Try to predict the behavior when a parameter changes before using a slider to change that parameter. Screencasts below explain how to use these simulations.
Simulation: Visualization of Vapor-Liquid Equilibrium in a Binary Mixture
Try to answer these questions before determining the answer with the simulation. We suggest that you write down the reasons for your answers.
- For a relative volatility of 2.0 (blue/green), and a liquid mole fraction of 0.50, when the liquid mole fraction increases for blue molecules, does the vapor mole fraction of blue molecules increase or decrease?
- For a relative volatility of 2.0, and a liquid mole fraction of 0.50, when the relative volatility (blue/green) increases , does the vapor mole fraction of blue molecules increase or decrease?
Simulation: P-x-y and T-x-y Diagrams for VLE
Try to answer these questions before determining the answer with the simulation. We suggest that you write down the reasons for your answers.
- When the temperature increases, what happens to the two curves in the P-x-y diagram? Do they move to higher or lower pressure or do they not change? Why?
- If the black dot moves at constant overall composition to higher pressure at constant temperature in the P-x-y diagram, do the mole fractions of the liquid and vapor phases increase or decrease or does one increase and one decrease?
- How is the T-x-y diagram different from the P-x-y diagram?