Flash Distillation (or Single-Stage Contact)A mixture of 70 mole % n-pentane and 30 mole % n-heptane is vaporized at 101.325 kPa (absolute) until 60 moles of vapor and 40 moles of liquid in equilibrium with each other are produced. This occurs in a singlestage system and the vapor and liquid are kept in contact until equilibrium is achieved. Calculate the composition of the vapor and liquid.Note: Assume the system exhibits ideal behavior (which it mostly does), e.g. Raoult’s Law applies and an Antoine’s Vapor Pressure correlation is a sufficiently accurate model of component vapor pressure. n-Pentanen-HeptaneTempn-Pentane Fractions Pvp (mmHg)Pvp (mmHg)(oC) xy760.377.736.051.0001.000814.085.138.060.9260.992870.793.040.080.8580.983930.3101.642.090.7950.973993.1110.844.100.7360.9621059.2120.746.110.6820.9491128.5131.448.130.6310.9361201.4142.750.140.5830.9221277.8154.952.150.5390.9061357.9167.954.170.4980.8891441.8181.756.180.4590.8711529.6196.558.190.4230.8511621.5212.260.200.3890.8291717.5229.062.220.3570.8061817.7246.764.230.3270.7821922.4265.666.240.2990.7552031.6285.768.260.2720.7262145.4306.970.270.2470.6962263.9329.472.280.2230.6632387.3353.274.300.2000.6282515.7378.376.310.1790.5912649.2404.878.320.1580.5522788.0432.980.330.1390.5102932.1462.482.350.1210.4653081.6493.584.360.1030.4183236.8526.386.370.0860.3683397.7560.788.390.0700.3143564.5596.990.400.0550.2583737.2634.992.410.0400.1993916.0674.894.420.0260.1364101.0716.796.440.0130.0704292.4760.698.450.0000.000

A mixture of two hydrocarbons is flashed vaporized.Schematic of the process is shown below:Here,1 =…

Answered: A mixture of 70 mole % n-pentane and 30…

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

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Flash Distillation (or Single-Stage Contact)

A mixture of 70 mole % n-pentane and 30 mole % n-heptane is vaporized at 101.325 kPa (absolute) until 60
moles of vapor and 40 moles of liquid in equilibrium with each other are produced. This occurs in a singlestage system and the vapor and liquid are kept in contact until equilibrium is achieved. Calculate the
composition of the vapor and liquid.
Note: Assume the system exhibits ideal behavior (which it mostly does), e.g. Raoult’s Law applies and an
Antoine’s Vapor Pressure correlation is a sufficiently accurate model of component vapor pressure.

n-Pentane	n-Heptane	Temp	n-Pentane Fractions
Pvp (mmHg)	Pvp (mmHg)	(oC)	x	y
760.3	77.7	36.05	1.000	1.000
814.0	85.1	38.06	0.926	0.992
870.7	93.0	40.08	0.858	0.983
930.3	101.6	42.09	0.795	0.973
993.1	110.8	44.10	0.736	0.962
1059.2	120.7	46.11	0.682	0.949
1128.5	131.4	48.13	0.631	0.936
1201.4	142.7	50.14	0.583	0.922
1277.8	154.9	52.15	0.539	0.906
1357.9	167.9	54.17	0.498	0.889
1441.8	181.7	56.18	0.459	0.871
1529.6	196.5	58.19	0.423	0.851
1621.5	212.2	60.20	0.389	0.829
1717.5	229.0	62.22	0.357	0.806
1817.7	246.7	64.23	0.327	0.782
1922.4	265.6	66.24	0.299	0.755
2031.6	285.7	68.26	0.272	0.726
2145.4	306.9	70.27	0.247	0.696
2263.9	329.4	72.28	0.223	0.663
2387.3	353.2	74.30	0.200	0.628
2515.7	378.3	76.31	0.179	0.591
2649.2	404.8	78.32	0.158	0.552
2788.0	432.9	80.33	0.139	0.510
2932.1	462.4	82.35	0.121	0.465
3081.6	493.5	84.36	0.103	0.418
3236.8	526.3	86.37	0.086	0.368
3397.7	560.7	88.39	0.070	0.314
3564.5	596.9	90.40	0.055	0.258
3737.2	634.9	92.41	0.040	0.199
3916.0	674.8	94.42	0.026	0.136
4101.0	716.7	96.44	0.013	0.070
4292.4	760.6	98.45	0.000	0.000