3. Corresponding states
The principle of corresponding states enunciated by Van der Waals almost a century ago is too simple to represent all fluids solely by considering the reduced pressure p + = p /p c and the reduced temperature T + = T /T c , p c and T c being the pressure and absolute temperature at the critical point.
3.1 Acentric factor
Riedel proposed an additional dimensionless parameter α c which is related to the slope of the liquid-vapor equilibrium curve...
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