1. Validity of Ideal Gas EOS Using generalized correlations for gasses Jordan Orsak Lance Brockway Bryan Hinson Philip Brown

2. When can you use it? The Ideal-gas equation may be used as a reasonable approximation of reality when Z 0 lies between.98 and 1.02

3. Checking the Validity of an Ideal Gas Assumption Look at the specific molar volume of the gas. The ideal gas equation is good to within about 1% if:

4. Example

6. Generalized Correlations for Liquids This correlation is most suitable for nonpolar and slightly polar fluids. For estimation of molar volumes of saturated liquids. Rackett: Alternate:

7. Generalized Correlations for Liquids Cont. Lydersen, Greenkorn, and Hougen’s two-parameter correlation for liquid volumes. is reduced density is density at the critical point

8. Generalized Correlations for Liquids Cont. Using a single known liquid volume: V 2 = required volume V 1 = known volume = reduced densities from figure 3.16

9. Generalized Density Correlation for Liquids

10. Example

12. Works Cited J.M. Smith, H. C. Van Ness and M. M. Abbot, Introduction to Chemical Engineering Thermodynamics (7 th ed. McGraw-Hill, New York, 2005). Pg. (104-111). Felder, R.M. and R.W. Rousseau, Elementary Principles of Chemical Processes, 2nd Edition, John Wiley, 1986, pp. 193-208..