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Using the following compressibility factor data for CO2 at 150 oC: P (bar) Z 10 0.985 20 0.970 40 0.942 60 0.913 80 0.885 100 0.869 200 0.765 300...

Using the following compressibility factor data for CO2 at 150 oC:

P (bar) Z
10 0.985
20 0.970
40 0.942
60 0.913
80 0.885
100 0.869
200 0.765
300 0.762
400 0.824
500 0.910

a) Prepare a linear fit of Z versus P for the first four points (up to 60 bar) and determine a value B’ (atm-1) for CO2 at 150 oC in the two-term virial equation.

b) Use your answer from part b) in the two-term virial equation to prepare a plot of the fugacity coefficient, , versus pressure (from 1 to 500 bar) for CO2 at 150 oC.

c) prepare a plot of (Z-1)/P versus P for CO2 at 150 oC.

d) Use your plot in part c) to obtain a relation for ln  versus P and prepare a plot of the fugacity coefficient, , versus pressure (from 1 to 500 bar) for CO2 at 150 oC.

e) How do your answers from parts b) and d) compare? Give reasons for any agreement or disagreement.

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