Maxwell Construction · Equal-Area Rule
unseel.com · van der Waals loop · liquid–vapor coexistence · Tₖ = 0.9
Pₛₜₜ
Areas
phase
vdW isotherm (P–V)
Unstable branch (∂P/∂V>0)
Maxwell tie line Pₛₜₜ
Equal areas above = below
Unseel.com · Maxwell Construction