Question

EXAMPLE 3 Calculate the fugacity of nitrogen at -120°C and pressures of 20 and 60atm using the flowing date, through an analytical method P atm 0 15 25 30 45 60 68 Z= PV/MRT 1.0 0.94 0.91 0.89 0.84 0.78 0.76

Answer 1

p Patom o 15 25 30 45 60 68. 1 0.94 0.91 0.89 0.84 0.78 0.76 we have to calcuate fugacity of nitrogen od -120C and pressures of 20 and 60 atm hle know the relatim ship between, fugacity and compressibility factor Z ($) - SP Plan o is as 30 us 60 68. --36X) -36872 -3.5x-3.6exis -32iB Apply trapezoidal rule I bel host tem) + ((ast tom) + 2 (Semaining tema) his the step site follow. Here is not some at all interval, for this the following procedule, List po 15 o u xoo I 150+ (-4xio). -0.03

p 15 25 I NO -36x103 I 105 - AXD² - 26x168 - -0.038 P 25 30 -3.6816? 3-6x103 Po $(-3-6x76% - 3-65x18) -0.038 -0.01817 P 30 is 60. (9) 3:66° 3.7816° -3-6x16? 15(+3.40%*) + (36213 ) + 2 (3:54) - 6-10815 p 60 68 - ()-366X163-33333 $(-34648* - 3:53x13] -0.02876

- 1n17) - Te Iz + Iz t fut by – 0.22308 $ - 602308 (f/p) - 0.8005 fugacity of nitrogen od -lao'e at do atm fa (0.8005) x 20 - 16 atm fugacity of nitrogen at - 128c at 60 atm f = (0.8005) x 60 - 48.603 atm