Summary: Immiscible Liquid Phase Diagrams
  1. If a liquid is present, it exerts its own saturation pressure, independent if other immiscible liquid phases are present.     
  2. The partial pressure of a component in the vapor phase is always less than or equal to its saturation pressure.
  3. When a vapor mixture is cooled or its pressure is increased, one component will condense first unless the vapor mole fractions are proportional to their saturation pressures.
  4. For a given temperature, two liquids are in equilibrium with the vapor phase at only one pressure.
  5. For a given pressure, two liquids are in equilibrium with the vapor phase at only one temperature.
   
                                                                             https://sites.google.com/a/learncheme.com/learncheme/student-resources/interactive-module-raoult-s-law-and-vapor-liquid-equilibrium/interactive-module-raoult-s-law-intro

Prepared by John L. Falconer and Kimberly R. Bourland

Department of Chemical and Biological Engineering, University of Colorado Boulder