Redlich-Kwong (a - constant)


Introduced in 1949, the Redlich-Kwong equation of state was a considerable improvement over other equations of the time. It is still of interest primarily due to its relatively simple form. While superior to the van der Waals equation of state, it performs poorly with respect to the liquid phase and thus cannot be used for accurately calculating vapor–liquid equilibria. However, it can be used in conjunction with separate liquid-phase correlations for this purpose.

Related formulas


aattractive potential correction constant ((((J*mol-1*K-1)2)*K)/Pa)
Rmolar gas constant
Tccritical temperature (K)
pccritical pressure (Pa)