Calculate the bubble point temperature (T_BP) and the composition of the vapor phase of a liquid mixture containing 30% acetone, 30% acetonitrile, and 40% nitromethane by mole fraction at 101.3 kPa. If the mixture was a vapor mixture containing 30% acetone, 30% acetonitrile, and 40% nitromethane by mole fraction at 101.3 kPa, what would be the dew point temperature (T_DP) and the composition of the liquid phase?

a) Calculate analytically.

b) Use a computer program for the calculation.

c) Plot the x_-acetone, x_{-acetonitrile}, x_{-nitromethane} versus T and y_-acetone, y_{-acetonitrile}, y_{-nitromethane} versus T graphs.

Vapor pressures of acetone, acetonitrile and nitromethane

		Acetone	Acetonitrile	Nitromethane
T, C	T, K	P, kPa	P, kPa	P, kPa
75	348.15	171.6	83.2	42
76	349.15	176.8	86	43.6
77	350.15	182.2	88.8	45.2
78	351.15	187.7	91.8	46.8
79	352.15	193.3	94.8	48.6
80	353.15	199	97.8	50.3
81	354.15	204.9	101	52.1
82	355.15	210.9	104.2	54
83	356.15	217.1	107.6	55.9
84	357.15	223.4	111	57.9
85	358.15	229.8	114.4	59.9
86	359.15	236.4	118	62
87	360.15	243.1	121.7	64.2
88	361.15	250	125.4	66.4
89	362.15	257	129.3	68.6
90	363.15	264.2	133.2	71