# Compressibility Factors Using the Soave-Redlich-Kwong Equation of State

Compressibility Factors Using the Soave-Redlich-Kwong Equation of State

The Soave–Redlich–Kwong equation of state can accurately describe a compound in both liquid and vapor phases. This Demonstration applies this equation of state to estimate and plot the compressibility factor, , versus reduced pressure, =, for ethane at various values of the reduced temperature, =.

Z=

PV

RT

P

r

P

P

c

T

r

T

T

c