Calculate the enthalpy and entropy of saturated isobutane vapor at 360 K from the following information:

1. Table 6.1 gives compressibility-factor data (values of Z) for isobutane vapor. 2. The vapor pressure of isobutane at 360 K is 15.41 bar. 3. Set H = 18,115.0 J mol- and S reference state at 300 K and 1 bar. [These values are in accord with the bases adopted by R. D. Goodwin and W. M. Haynes, Nat. Bur. Stand. (U.S.), Tech. Note 1051, 1982.) 295.976 J mol- K- for the ideal-gas %3D 4. The ideal-gas heat capacity of isobutane vapor at temperatures of interest is: cIR = 1.7765 + 33.037 x 10-T (T/ K) Table 6.1: Compressibility Factors Z for Isobutane P/bar 340 K 350 K 360 K 370 K 380 K -T 0.10 0.99700 0.99719 0.99737 0.99753 0.99767 0.98745 0.98830 0.98907 0.98977 0.99040 0.95895 0.96206 0.96483 0.96730 0.96953 0.92422 0.93069 0.93635 0.94132 0.94574 0.88742 0.89816 0.90734 0.91529 0.92223 0.84575 0.86218 0.87586 0.88745 0.89743 0.79659 0.82117 0,84077 0.85695 0.87061 0.77310 0.80103 0.82315 0.84134 0.50 4. 8. 10 12 14 15.41 ...... 0.75506 0.78531 0.80923 ...... ...... 0.71727 ...... ......