The virial equation of state gives the compressibility factor Z of a gas as a function of the molar volume V or of the pressure P. PV. =1+ RT в +*=1+ B'P + C'p + Since this equation goes on to an infinite number of terms and succeeding terms give less and less contribution to the compressibility factor, taking only into account a few terms is enough for a good approximation. B z =1+ + =1+ B'P +C'p
The virial equation of state gives the compressibility factor Z of a gas as a function of the molar volume V or of the pressure P. PV. =1+ RT в +*=1+ B'P + C'p + Since this equation goes on to an infinite number of terms and succeeding terms give less and less contribution to the compressibility factor, taking only into account a few terms is enough for a good approximation. B z =1+ + =1+ B'P +C'p
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:The virial equation of state gives the compressibility factor Z of a gas as a function of the
molar volume V or of the pressure P.
PV.
=1++;
RT
B.C
+=1+B'P + C'p +..
Since this equation goes on to an infinite number of terms and succeeding terms give less
and less contribution to the compressibility factor, taking only into account a few terms is
enough for a good approximation.
B
Z = 1+
1+ B'P +C'p:
The virial coefficients for the volume-based equation at 25 K are. B= -106.2 and C=
mel
1402
The volume-based and pressure-based coefficients have the following
relationship:
B = RTB', C- (RT) c
With these answer the following:
What is the fugacity in bar of hydrogen at 3 bar?
Calculate the fugacity coefficient at 10 bar.
Between 3 bar and 10 bar, in which pressure is hydrogen closer to ideal
b.
gas behavior?
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