The following chart below is a plot of VLE data from the Dortmund data bank for a binary mixture of acetone (1) and isopropanol (2) at a constant temperature of 328.15 K. Values for the plot are also included in the table below. The saturated vapor curve is magenta, and the saturated liquid curve is cyan. Answer the following questions related to VLE. Pressure (kPa) c) 95 85 75 65 55 45 35 25 0 T=328.15 K 0.2 0.4 0.6 Mole fraction x1, y1 0.8 1 -P-X -Py P (kPa) 30.30 34.393 0.0237 0.1166 39.93 0.0642 0.2777 44.208 0.0971 0.3625 52.026 0.1591 0.4762 59.05 0.2353 0.5722 60.848 0.2687 0.6024 69 0.3879 0.6995 71.177 0.4314 0.7284 75.068 0.5234 0.7655 80.287 0.6084 0.8098 85.038 0.7216 0.8617 85.942 0.7338 0.8729 91.22 0.8569 0.924 94.308 0.9214 0.9629 1 96.91 1 X1 10 Y₁ 10 A superheated vapor of acetone and isopropanol with mole fractions y₁=0.36 and y2=0.64 is initially at 35 kPa pressure. What pressure must you increase this gas mixture to before it starts to condense? (Hint: you can approximate this simply on the plot). Draw the path between initial conditions, and final conditions (the dew pressure) on the plot.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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The following chart below is a plot of VLE data from the Dortmund data bank for a binary mixture of acetone (1)
and isopropanol (2) at a constant temperature of 328.15 K. Values for the plot are also included in the table
below. The saturated vapor curve is magenta, and the saturated liquid curve is cyan. Answer the following
questions related to VLE.
Pressure (kPa)
c)
95
85
75
65
55
45
35
25
0
T=328.15 K
0.2
0.4
0.6
Mole fraction x1, y1
0.8
1
-P-x
-P-y
P (kPa)
30.30
34.393
39.93
44.208
52.026
59.05
60.848
69
X1
0
y₁
0
0.0237
0.1166
0.0642 0.2777
0.0971 0.3625
0.1591 0.4762
0.2353 0.5722
0.2687 0.6024
0.3879 0.6995
71.177 0.4314 0.7284
75.068 0.5234 0.7655
80.287 0.6084 0.8098
85.038 0.7216 0.8617
85.942 0.7338 0.8729
0.8569 0.924
91.22
94.308 0.9214 0.9629
96.91 1
1
A superheated vapor of acetone and isopropanol with mole fractions y₁=0.36 and y2=0.64 is
initially at 35 kPa pressure. What pressure must you increase this gas mixture to before it starts to
condense? (Hint: you can approximate this simply on the plot). Draw the path between initial conditions,
and final conditions (the dew pressure) on the plot.
Transcribed Image Text:The following chart below is a plot of VLE data from the Dortmund data bank for a binary mixture of acetone (1) and isopropanol (2) at a constant temperature of 328.15 K. Values for the plot are also included in the table below. The saturated vapor curve is magenta, and the saturated liquid curve is cyan. Answer the following questions related to VLE. Pressure (kPa) c) 95 85 75 65 55 45 35 25 0 T=328.15 K 0.2 0.4 0.6 Mole fraction x1, y1 0.8 1 -P-x -P-y P (kPa) 30.30 34.393 39.93 44.208 52.026 59.05 60.848 69 X1 0 y₁ 0 0.0237 0.1166 0.0642 0.2777 0.0971 0.3625 0.1591 0.4762 0.2353 0.5722 0.2687 0.6024 0.3879 0.6995 71.177 0.4314 0.7284 75.068 0.5234 0.7655 80.287 0.6084 0.8098 85.038 0.7216 0.8617 85.942 0.7338 0.8729 0.8569 0.924 91.22 94.308 0.9214 0.9629 96.91 1 1 A superheated vapor of acetone and isopropanol with mole fractions y₁=0.36 and y2=0.64 is initially at 35 kPa pressure. What pressure must you increase this gas mixture to before it starts to condense? (Hint: you can approximate this simply on the plot). Draw the path between initial conditions, and final conditions (the dew pressure) on the plot.
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