Calculate the composition (x j and y j for each component), quantities of gas an

Question

Calculate the composition (xj and yj for each component), quantities of gas and liquid (nL and nv), and bubble point and dew point pressures for 2 lbmoles of the following mixture @ equilibiurm at 150oF and 200 psia. Assume ideal solution behavior and accept your guess as the answer if ?xj=1.00 +/- 0.01, ?yj=1.00 +/- 0.01. For the calculation of dew-point and bubble-point pressures, start from the equations given below and derive the equations for pb and pd. Please show all work please and thank you!!!

                Component   zj                     pvj at 150oF, psia

C3                           0.600 350

n-C4                       0.270   105

n-C5                       0.130   37

Explanation / Answer

Component Composition, mole fraction C3 0.6 n-C4 0.27 n-C5 0.13 1.00 Solution Component Composition, mole fraction zj Vapor pressure at 150 F          pvj* zj*pvj C3 0.6 350 210.0 n-C4 0.27 105 28.4 n-C5 0.13 37 4.8 1.00 243.2 pb= 243.2 psia

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