P-x-y and T-x-y Diagrams for Vapor-Liquid Equilibrium (VLE)
The vapor-liquid equilibrium (VLE) behavior of an -hexane/-octane mixture is demonstrated in and diagrams. The blue line represents the liquid-phase boundary (bubble point) and the green line represents the vapor-phase boundary (dew point). Click and drag the black dot on either diagram and the bar chart shows the amounts of liquid (blue) and vapor (green) present; the system contains a total of 1 mol. The mole fractions of -hexane in each phase ( for liquid phase, for vapor phase) are also shown in the bar graph. Use sliders to vary the temperature for the diagram or the pressure for the diagram. This system is modeled by Raoult's law because an -hexane/-octane liquid phase is assumed ideal.