Example 2.2 Calculate the acentric factor for benzene. Critical temperature and critical pressure are 561.65 °K, and 47.7 atm, respectively.
Solution
Pitzer's temperature, TP (Equation 2.6):
Vapor pressure of benzene at Pitzer's temperature, PP:
PP = 2.974 atm.
Pitzer acentric factor, ω (Equation 2.5):