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Quiz 10 Che Thermodynamicsbeaucag/Classes/ChEThermoBeaucage... · 2017-03-27 · Quiz 10 Chemical...
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Quiz 10 Chemical Engineering Thermodynamics March 23, 2017 Determine the fugacity (MPa) for ethane at (a) 7°C (280°K) and 1 MPa and (b) 7°C (280°K) and 4.0 MPa using the virial equation and the shortcut vapor pressure. T c = 305.3 °K, P c = 4.9 MPa , V c = 147 cm 3 /mole, ω = 0.099, R = 8.314 J/(mole °K) = 8.314 cm 3 MPa/(mole°K) Determine if the short cut method is appropriate. Calculate the vapor pressure and determine the state for each condition. Determine if the virial equation is appropriate. (Accept if you are within 10% of the criterion) Calculate the fugacity (using different methods for the different states).
Transcript of Quiz 10 Che Thermodynamicsbeaucag/Classes/ChEThermoBeaucage... · 2017-03-27 · Quiz 10 Chemical...
Quiz 10 Chemical Engineering Thermodynamics
March 23, 2017 Determine the fugacity (MPa) for ethane at (a) 7°C (280°K) and 1 MPa and (b) 7°C (280°K) and 4.0 MPa using the virial equation and the shortcut vapor pressure. Tc = 305.3 °K, Pc = 4.9 MPa , Vc = 147 cm3/mole, ω = 0.099, R = 8.314 J/(mole °K) = 8.314 cm3MPa/(mole°K) Determine if the short cut method is appropriate. Calculate the vapor pressure and determine the state for each condition. Determine if the virial equation is appropriate. (Accept if you are within 10% of the criterion) Calculate the fugacity (using different methods for the different states).
Zc = Pc Vc/(RTc)
0.1 1 10
100-300-200
-1000
100200
300400
500600
700800
Enthalpy [kJ/kg]
Pressure [MPa]
T=-80 T=-70
T=-60 T=-50
T=-40
T=-30
T=-20
T=-10
T=0T=10
T=20
T=-50
T=0
T=50
T=100
T=150
T=200
S=4.0
S=4.5
S=5.0S=5.5
S=6.0S=6.5
S=7.0
S=7.5S=8.0
S=8.5
EthaneP
ressure-Enthalpy D
iagramS
=Specific E
ntropy, kJ/kg*KT=Tem
perature, ºC
Ethane
Produced by I. A
artun, NTN
U 2002. B
ased on the program A
llprops, C
enter for Applied Therm
odynamic S
tudies, University of Idaho.
