problem 1: find out the fugacity of liquid acetone at 110 0C and 275 bar. At 110 0C the vapor pressure of acetone is 4.360 bar and the molar volume of saturated liquid acetone is 73 cm3/mole. For the vapor phase holds: PV/(RT) = 1 + BP/(RT), with B= -700 cm3/mole. R = 8.3144 J/(K.mole) = 83.144 bar/(K.mole).
problem 2: For the binary system 2, 4-dimethylpentane (1) + benzene (2) the excess Gibbs energy of the liquid phase is given by:
GE/(x1x2) = (A12x1 + A21x2)
a) find out the constants A12 and A21 if γ∞1 = 1.958 and γ∞2 = 1.478
b) find out at 60°C the pressure and composition of the vapor phase which is in equilibrium with a liquid phase with composition x1 = 0.5. At this temperature the saturated vapor pressures of component 1 and 2 are respectively 52.4 and 52.3 kPa. The vapor phase is ideal and the Poynting correction can be ignored.
c) find out Henry’s constant of component 2 in pure component 1 and of component 1 in pure component 2.