Cubic Equations of State
name
(year)
Equations of State
(EOS)
van der Waals
(1873)
0.421875 0.125 ---
Redlich/Kwong
(1949)
0.42748Tc1/2 0.08664 ---
Soave/Redlich/Kwong
(1972)
0.42748 0.08664
Peng/Robinson
(1976)
0.45724 0.07780