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Unformatted text preview: • The cubic EOS we saw earlier become very difficult to deal with for nonideal gas mixtures 1/27/11 Kay’s rule • Easy way to deal with mixtures of nonideal gases • _____________________________ of mixtures by averaging pure component critical constants Tc’ = yATcA + yBTcB + yCTcC + … Pc’ = yAPcA + yBPcB + yCPcC + … • yi is the ___________of species i in the 1/27/11 Kay’s rule • The pseudocritical properties can be used to calculate the pseudocritical temperature and pressure Tr’=T/Tc’ Pr’=P/Pc’ • We can know use the compressibility charts to estimate zm the compressibility factor for the mixture 1/27/11 Example A mixture of 75 % H2 and 25% N2 (molar basis) is contained in a tank at 800 atm and 70˚C. Estimate the specific volume of the mixture in L/mol using Kay’s rule. 1/27/11...
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This note was uploaded on 01/26/2011 for the course CHE 2171 taught by Professor Wetzel during the Spring '08 term at LSU.
 Spring '08
 wetzel

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