申論題

4. It is necessary to determine the vapor-liquid equilibrium composition for designing a separation process for a binary mixture of perfluoro-n-heptane and n-heptane at 25 ℃ At this temperature, the vapor pressure of pure perfluoro-n-heptane is 0.1101 bar, and the vapor pressure of pure n-heptane is 0.0601 bar.

(c) (6%) Recalculate the composition in part (a), assuming the solution obeys the regular solution theory. The regular solution parameters are