A mixture of A-B containing 50 mole percent A substance is in vapor form in a tank at 400 K and 10 bar pressure. In this conditions; a) Ideal gas behavior of the components in question b) ideal solution behavior of the mixture Demonstrate whether or not they show through the concept of the fugacity coefficient. Assume that the vapor phase behavior of this mixture and of the pure states of matter can be expressed in the simplest form of the virial equation of state. DATA:

= 623 cm3/mol

\begin{tabular}{|c|c|c|c|c|c|c|c|} \hline Bilessen & Tc, K & Pc, bar & Vc, cm3/mol & Zc & & B0 & B1 \\ \hline A & 500 & 47 & 200 & 0.210 & 0.300 & & \\ \hline B & 550 & 50 & 260 & 0.280 & 0.200 & 0.620 & 0.520 \\ \hline \end{tabular}