A vapor at 363.15 K consists of 30% mole of propane, 30% mole of n-butane and 40% mole of n-pentane. On compressing the vapor.

(a) At what pressure does condensation begin?

(b) At what pressure does condensation of half the moles occur?

(c) At what pressure does condensation terminate?

Antonie's constants:

Propane: A= 15.726, B=1872.46, C=-25.16.

n-butane: A=15.6782, B=2154.9, C=-34.42

n-pentane: A=15.8333, B=2477.07, C=-39.94