2. Consider a binary mixture of bromobenzene and chlorobenzene. Assume bromobenzene and chlorobenzene form an ideal mixture, and the vapor pressure for the pure compounds can be obtained from the Antoine equation: B log 10 Psat A t+ C where Psat is in torr (1 atm = 760 torr) and t is in °C. The Antoine constants for bromobenzene and chlorobenzene are: Component A В Applicable Range Bromobenzene 6.86060 1438.820 205.540 47 to 177 °C Chlorobenzene 6.97810 1431.050 217.650 47 to 147 °C a. Estimate the boiling points at 1 atm for pure bromobenzene and pure chlorobenzene. b. Calculate the bubble point (Tpubble) for a mixture of 40 mol % bromobenzene and 60 mol %
2. Consider a binary mixture of bromobenzene and chlorobenzene. Assume bromobenzene and chlorobenzene form an ideal mixture, and the vapor pressure for the pure compounds can be obtained from the Antoine equation: B log 10 Psat A t+ C where Psat is in torr (1 atm = 760 torr) and t is in °C. The Antoine constants for bromobenzene and chlorobenzene are: Component A В Applicable Range Bromobenzene 6.86060 1438.820 205.540 47 to 177 °C Chlorobenzene 6.97810 1431.050 217.650 47 to 147 °C a. Estimate the boiling points at 1 atm for pure bromobenzene and pure chlorobenzene. b. Calculate the bubble point (Tpubble) for a mixture of 40 mol % bromobenzene and 60 mol %
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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Transcribed Image Text:2. Consider a binary mixture of bromobenzene and chlorobenzene. Assume bromobenzene and
chlorobenzene form an ideal mixture, and the vapor pressure for the pure compounds can be
obtained from the Antoine equation:
В
log 10
Psat
= A -
t+ C
where Psat is in torr (1 atm = 760 torr) and t is in °C. The Antoine constants for bromobenzene
and chlorobenzene are:
Component
Bromobenzene
Chlorobenzene
Applicable Range
47 to 177 °C
47 to 147 °C
A
B
6.86060
1438.820
205.540
6.97810
1431.050
217.650
а.
Estimate the boiling points at 1 atm for pure bromobenzene and pure chlorobenzene.
b. Calculate the bubble point (Tpubble) for a mixture of 40 mol % bromobenzene and 60 mol %
chlorobenzene.
c. Calculate the dew point (Tdew) for a mixture of 40 mol % bromobenzene and 60 mol %
chlorobenzene.
d. Calculate the liquid and vapor compositions for a mixture of 40 mol % bromobenzene and
60 mol % chlorobenzene at equilibrium with moles liquid (L) / moles vapor (V) = 3.
e. Recalculate the dew point (Tdew) for a mixture of 60 mol % bromobenzene and 40 mol %
chlorobenzene. Please compare the dew points of the mixtures in parts (c) and (e) - which
mixture yields a higher dew point and why?
Expert Solution
Step 1 Given terms
log10Psat=A-B/(T+C)..................1
Where the A, B, C are Antonie coefficients and T is in deg C and Psat is in torr
In terms of Temperature
Equation 1 can be written as
| Component | A | B | C | Temperature range |
| Bromo benzene | 6.86060 | 1438.820 | 205.540 | 47-177 |
| Chloro benzene | 6.97810 | 1431.050 | 217.650 | 47-147 |
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