The vapor pressure of water at T = 200OC is Psat = 15.55 bar, and the molar volume of saturated liquid at this temperature is V = 20.85 cm3/mol. Estimate the fugacity of liquid water at T = 200oC and the following pressures: P = 1 bar, P = 100 bar, and P = 1000 bar. Compare estimates from directly using equation of states (Peng-Robinson) and that from applying Potnying correction factor.