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Solutions to some of the problems of this chapter require vapor pressures as a function of temperature. Table B . 2 , Appendix B ,

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.
13.1. Assuming the validity of Raoult's law, do the following calculations for the benzene(1)/toluene(2) system:
(a) Given x1=0.33 and T=100C, find y1 and P.
(b) Given y1=0.33 and T=100C, find x1 and P.
(c) Given x1=0.33 and P=120kPa, find y1 and T.
(d) Given y1=0.33 and P=120kPa, find x1 and T.
(e) Given T=105C and P=120kPa, find x1 and y1.
(f) For part (e), if the overall mole fraction of benzene is z1=0.33, what molar fraction of the two-phase system is vapor?
(g) Why is Raoult's law likely to be an excellent VLE model for this system at the stated (or computed) conditions?
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