Pxy Phase Diagrams at a Fixed Temperature

Pxy Phase Diagrams
at a Fixed Temperature

This temperature determines P1sat and P2sat

Ease of separation increases as
difference between P1sat and P2sat increases

These diagrams use

Raoult's Law

liquid is an ideal solution

liquid volume is small & constant

vapor is an ideal gas mixture

pure vapors are ideal gases

Note that P range differs between
the three diagrams