Determination of the Second Virial Coefficient for Binary Mixtures of Ar with CH4 and CO using Van der Waals and Dieterici Models

In this paper, we calculate the second virial coefficient for binary mixtures of ar withch4 and co in order to evaluate the performance of equations of state (eoss). theinvestigated eoss are van der waals (vdw), redlich-kwong (rk), peng-robinson(pr), carnahan-starling–van der waals (cs-vdw) and guggenheim-van der waals (gvdw)based on van der waals model. in our work, we also use dieterici model of eosconsists of dieterici (d) and dieterici-carnahan-starling (dcs). in this study, theability of these eoss to predict second virial coefficients of binary mixtures isillustrated and since these models represent two different physical attitudes ofcontribution of interaction between molecules to thermodynamic functions, thereforfrom this view point, a comparison between the two models of equations of state is also reported.