Select a molecule

Properties

Critical temperature (Tc):
Critical pressure (Pc):
Acentric factor (ω):

van der Waals

liquid molar volume

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vapor molar volume

-

Soave-Redlich-Kwong

liquid molar volume

-

vapor molar volume

-

Peng-Robinson

liquid molar volume

-

vapor molar volume

-

Equations of state

van der Waals

P = RT Vm − b − a Vm2

Soave-Redlich-Kwong

P = RT Vm − b − a α(T, ω) Vm(Vm + b)

Peng-Robinson

P = RT Vm − b − a α(T, ω) Vm2 + 2bVm − b2