1. Compute the equilibrium vapor and liquid compositions for the following LPG (Liquefied Petroleum Gas) mixture at 30°C and 3.8 bar. Assume that the LPG mixture behaves like an ideal solution. Use Antoine equation for vapor pressure calculations (do your calculations at n= 0.700 and 0.718). Fill in the following table to summarize your findings. Do calculations by hand and do not use any spreadsheet application. Component Mole fraction Propane (CaHe) -Butane (-CaH1o) n-Butane (n-CaHso) n-Pentane (n-CsH12) 0.210 0.030 0.700 0.060 Σ 1.000 Also calculate bubble and dew point pressures, vapor composition at the bubble point pressure and liquid composition at the dew point pressure at 30°C. Remember that at the bubble point pressure xz and at the dew point pressure yz. NL= 0.718 @ Putele @ Poe XI Propane -Butane n-Butane n-Pentane Remember that y, @ bubble P=, (x, ==) x@ dew P

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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1. Compute the equilibrium vapor and liquid compositions for the following LPG (Liquefied
Petroleum Gas) mixture at 30°C and 3.8 bar. Assume that the LPG mixture behaves like an
ideal solution. Use Antoine equation for vapor pressure calculations (do your calculations at
nL= 0.700 and 0.718). Fill in the following table to summarize your findings. Do calculations
by hand and do not use any spreadsheet application.
Zi
Component
Mole fraction
Propane (CaHe)
0.210
i-Butane (i-CaH10)
0.030
n-Butane (n-CaH10)
n-Pentane (n-CsH12)
0.700
0.060
Σ
1.000
Also calculate bubble and dew point pressures, vapor composition at the bubble point pressure
and liquid composition at the dew point pressure at 30°C. Remember that at the bubble point
pressure xizand at the dew point pressure y zı.
NL= 0.718
@ Phubble
@ Pdew
XI
XI
Propane
i-Butane
n-Butane
n-Pentane
Σ
Remember that
y, @ bubble P==,
(x, ==,)
X @ dew P
(y ==)
piat
Transcribed Image Text:1. Compute the equilibrium vapor and liquid compositions for the following LPG (Liquefied Petroleum Gas) mixture at 30°C and 3.8 bar. Assume that the LPG mixture behaves like an ideal solution. Use Antoine equation for vapor pressure calculations (do your calculations at nL= 0.700 and 0.718). Fill in the following table to summarize your findings. Do calculations by hand and do not use any spreadsheet application. Zi Component Mole fraction Propane (CaHe) 0.210 i-Butane (i-CaH10) 0.030 n-Butane (n-CaH10) n-Pentane (n-CsH12) 0.700 0.060 Σ 1.000 Also calculate bubble and dew point pressures, vapor composition at the bubble point pressure and liquid composition at the dew point pressure at 30°C. Remember that at the bubble point pressure xizand at the dew point pressure y zı. NL= 0.718 @ Phubble @ Pdew XI XI Propane i-Butane n-Butane n-Pentane Σ Remember that y, @ bubble P==, (x, ==,) X @ dew P (y ==) piat
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