Van der Waals equation of state


The van der Waals equation may be considered as the ideal gas law, “improved” due to two independent reasons: Molecules are thought as particles with volume, not material points and while ideal gas molecules do not interact, we consider molecules attracting others within a distance of several molecules’ radii.

Related formulas


pThe pressure (absolute) (Pa)
pcThe pressure at the critical point (Pa)
VcThe molar volume at the critical point (m3/mol)
VmThe molar volume (m3/mol)
Rmolar gas constant
TAbsolute temperature (K)