Raoult Bubble–Dew Lever Rule

Connect ideal bubble and dew curves with equilibrium tie lines and a lever rule.

Exploring the P-x-y Diagram

Change the interactive controls to see how the equilibrium shifts. You will explore a simple P-x-y visualization in the module view to verify calculations.

1. Open the module and set Volatility ratio to 2.
2. Set Liquid composition to 0.5. Observe the bubble pressure rising to 1.5, and equilibrium vapor composition to 0.6666666666666666.
3. Set Overall composition to 0.5. Now, the overall composition equals the liquid composition (z = x). The vapor fraction drops to 0.0, and the phase status becomes Two phase.

Open Raoult Bubble–Dew Lever Rule