The binary system CO2 (1) and n-pentane (2) can be described by the SRK equation of state with k12=0.2. Use this equation of state to do the following:

(a) Compute and plot the Pxy graph of this system at 280 K. Show the tie line at 30 bar.

(b) What is the phase of a mixture that contains 80% CO2 at 30 bar and 280 K? If a two-phase system, report the composition (x1, y1) and mole fractions L and V.

(c) Compute and plot the Txy graph for this system at 30 bar. Show the tie line at 280 K.

Please show works. Thank you.