4 A concentrated binary solution containing mostly species 2 (but x2=1 ) is in equilibrium with a vapor phase containing both species 1 and 2. The pressure of this two-phase system is 1 bar; the temperature is 25C. At this temperature, H1=200 bar and p2sat=0.10 bar. Determine good estimates of x1 and y1. State and justify all assumptions. Note: Solutions to some of the problems of this chapter require vapor pressures as a function of temperature. Table B.2, Appendix B, lists parameter values for the Antoine equation, from which these can be computed