The Berthelot equation corrects its "attractive force" term by making it temperature dependent.
The Keyes equation modifies this cubic equation for the effects of surrounding molecules, while the Dieterici equation modifies it for density variations due to higher potential energies near boundaries. The Berthelot equation corrects its "attractive force" term by making it temperature dependent. Inaccurate especially around the first-order phase transition, its "a" term corrects for intermolecular forces and its "b" term corrects for the real volume of gas molecules. FTP, name this equation of state, the first correction to the ideal gas law which is named for a Dutch scientist also known for some namesake intermolecular forces.
The Keyes equation modifies this cubic equation for the effects of surrounding molecules, while the Dieterici equation modifies it for density variations due to higher potential energies near boundaries.
van der Waals equation (do not accept or prompt on "ideal gas law" after the word 'cubic')