Example 2.5: If nitrogen follows the Redlich-Kwong equation, find fugacity coefficient at 100 bar and 250 °K. Use the following data: V = 196.67 cm³, Z = 0.946. Use P_c = 33.5 atm, T_c = 125.95 °K, R = 82.06 cm³/(mol·°K), a = 1.55 ´ 10⁷, b = 26.918

Solution:

$ h (Equation 2.20)

$ ln(φ) (Equation 2.19 for Redlich-Kwong PVT relationship gas)