CH E THERMODYNAMICS II
CH E THERMODYNAMICS II CH E 3322
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This 3 page Class Notes was uploaded by Damian Jones on Thursday October 22, 2015. The Class Notes belongs to CH E 3322 at Texas Tech University taught by Sindee Lou Simon in Fall. Since its upload, it has received 40 views. For similar materials see /class/226427/ch-e-3322-texas-tech-university in Chemical Engineering at Texas Tech University.
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Date Created: 10/22/15
Ch E 3322 Lecture 9 Fall 2007 Lecture 9 Fugacity of Pure Species Student Learning Objectives Knowwhythefugacityisimportant State rn your own Words whatthetugacrty rs Caicuiatethefugacity of pure hqurds and gases Understand how to caicuiate the vapor pressure of a pure hqurd as arunctron otternperature usrng a cuprc Eos The Chemical Potential G ur Nnte pr WW7 7 quot TPn Wr rpm Fundamentai equation d6 1 WP 39 SdT 2W rerereranupensystern VdP e SdT 7 2mm 1 o GrbbeDuhernequatren pr e pr e z m Phaseequmbna For a pure speeresr What rs W What rs upy What vaiues dues u take rer a spentaneeus precessv at equrhhnurn7 The Chemical Potential An lllBehaved Function do VdP 7 SdT Purespemes Let ustake an ideai gas at eunstant T Huvv vnh the chemicai pntentiai change wrth pressure7 What happens at F39 u rr Ham What happens at iarge F39 rr PM a bar Fall 2007 Ch E 3322 Lecture 9 Definition of Fugacity The fugamty coef cient Why is the fugamty impuna 7 What are the Criteria for Equlllbnum7 Evaluation of Fugacity for a Pure Component using EoS RT dlnf z Vdp atconstantT RT dlnP ap p RleM 1 RT dlnp When should oneusethe up dv lmegral 5 v v ln Zililnzif Evaluation of Fugacity for a Gas using the Generalized Correlations ino m m hh We can also use the Correlation for the vlrlal Coefficient B BPERTE B mB 7 l BPRT PSPETJZ Fol 7 ino 4 8 81 y Ch E 3322 Lecture 9 Evaluation of Fugacity for a Liquid Use Eos rt vauo for the uquro state Alternatively correct r sa wrrch for the vapor We can gel uSmg arr as orthe gene ahzed oorrelatrorr r r V rfa 53 Rsa at T53 and RM P lt P SB vapor P gt P53 quuro 39r fdlnf sa Wat Rsat exp VHPeR H RT Example Fugacity of nButane Liquid erverr The vapor pressure at 120 quot2 rs 22 38 barfor nebutane The volume of saturated mum at 120 quot05137 cm3mo Find l a Thefugaclty or saturated liquid at 120 c o Thefugaclty or liquid at 120 c and 34 par Example Calculation of Saturation Pressure ss meme SRK Eos lsvahdfor nebutane in both liquid and vapor states Fmdthe saturatron pressure preorcteo at 120 Fall 2007