a. Show that at moderately low pressures and densities the virial equation of state can be written as 

b. Prove that the fugacity coefficient for this form of the virial equation of state is 

c. The first two virial coefficients for methyl fluoride at 50°C are B = −0.1663 m³ /kmol and C = 0.012 92 (m³ /kmol)². Plot the ratio f /P as a function of pressure at 50°C for pressures up to 150 bar. Compare the results with the corresponding-states plot of f /P versus P/Pc.

Transcribed Image Text:

PV RT = 1 + B P RT 2 Р + (C-B²) B²) (P)² +. RT