Question: Redo Problem 6.29 using Aspen Plus Problem 6.29 Nitrogen is to be isothermally compressed at 0C from 1 bar to 100 bar. Compute the work

Redo Problem 6.29 using Aspen Plus

Problem 6.29

Nitrogen is to be isothermally compressed at 0°C from 1 bar to 100 bar. Compute the work required for this compression; the change in internal energy, enthalpy; Helmholtz and Gibbs energies of the gas; and the heat that must be removed to keep the gas at constant temperature if

a. The gas is an ideal gas.

b. The gas obeys the virial equation of state

PV RT 1+ B V C V with B = -10.3 x 10-6 m/mol and C = 1517 x 10-12 m6/mol.

c. The gas is described by the van der Waals equation

P = or equivalently PV RT RT V-b a V V a V-b VRT with a = 0.1368 Pa m6/mol and b = 3.864 10-5 m/mol.

d. The gas is described by the Peng-Robinson equation of state.

PV RT 1+ B V C V with B = -10.3 x 10-6 m/mol and C = 1517 x 10-12 m6/mol.

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