From the example 10.8, find the 2nd virial coefficient B, compressibility factor Z and molar volume V for the mixture. Example 10.8 Estimate from Eq. (10.67) a value for the fugacity of 1-butene vapor at 200C and 70 bar. 380 CHAPTER 10. The Framework of Solution Thermodynamics Solution 10.8 At these conditions, with T. = 420.0 K, P = 40.43 bar from Table B.1, we have: T, = 1.127 P,= 1.731 6=0.191 By interpolation in Tables D.15 and D.16 at these conditionis, 60 = 0.627 and != 1.096 Equation (10.67) then gives: $ = (0.627) (1.096)0.191 = 0.638 and f = $P = (0.638)(70) = 447 bar