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che320_hw3 - You will calculate different values of a and b...

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1 ChE 320 Homework Professor Darrell Velegol Fall 2009 HW 03: Chapter 03 1 Derive Eq 3.68 in Matsoukas for the fugacity. The Poynting factor is useful for higher pressures. 2 Derive Eq 3.75 and 3.78 in Matsoukas, for the fugacity coefficient ( φ ). These equations give φ for changing Z values. 3 Calculate the fugacity of CO 2 vapor at 10 C, 25 bar, using the SRK equation (similar to Example 3.10). 4 Calculate the saturation pressure of water at 350 C, and compare it with the experimental value (similar to Example 3.11). 5 Calculate the compressibility factor (Z) and fugacity coefficient for air at 180 K and 100 bar.
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Unformatted text preview: You will calculate different values of a and b for nitrogen (79% of air) and oxygen (21% of air), and one simple “combining rule” for treating air as a single species is to simply take the weighted molar average of the two values for a and b . Compare your result with the experimental value of Z = 0.7084. The resulting estimate from this experimental value is φ = 0.75. 6 Write a half page of the most important equations we have covered in the book, along with the page numbers and equation numbers. You may write these equations in one of the back pages of your book, to use in the exam....
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