Test2Spring04 (2) - 1 PGE 312 SPRING 2004 Physical and...

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1 PGE 312 – SPRING 2004 Physical and Chemical Behavior of Petroleum Fluids I Test #2, 50 Minutes Closed Book Note: It will be in your best interest to attempt all the questions. Please budget your time accordingly. 1. ( 30 points ) Twenty one (21) milli moles of propane and 29 milli moles of iso-pentane are charged into a PVT cell at T = 167 ° F and P = 147 psia. The equilibrium ratios (k-values) for the propane and the iso-pentane at the given conditions are as follows: k 3 = 2.18 k 5 = 0.48 a. Perform appropriate calculations to confirm that two phases are present in the PVT cell. Please show the results of your calculations to get credit. b. Calculate the milli moles of liquid in the cell. c. Calculate the liquid composition in mole fractions. Please note that a trial and error procedure is not required to solve this problem. You may find the following equations for a binary system of components A and B helpful: x A = 1 – k B k A – k B (1) y A = k A x A (2) n g n = z A – x A y A – x A (3)
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Test2Spring04 (2) - 1 PGE 312 SPRING 2004 Physical and...

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