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Due: Thursday, April 29, 1999
Perform a bubble-pressure calculation for the system ethane-ethylene at the liquid-phase compositions (x1 = mole fraction of ethane) given in the following table. The temperature is -0.01 deg C. Compare your results (via a figure) to the experimental vapor composition and pressure also given in the table.
|
x1 |
y1 |
P (bar) |
|
0.078 |
0.062 |
39.73 |
|
0.228 |
0.197 |
37.07 |
|
0.303 |
0.255 |
35.60 |
|
0.590 |
0.531 |
32.13 |
|
0.890 |
0.854 |
25.45 |
|
Model the vapor and liquid with the Soave-Redlich-Kwong equation of state, (Eq. (13.32) and related equations; see also table on page 486), with the van der Waals 1-fluid mixing rules (Eqs. 13.14 and 13.15, with a simple geometric mean for a12).
Solution |
