(a) Benzene and toluene form an ideal solution at 70 °C. The solution consists of 50% mole benzene. The vapor pressures (in mm Hg) for the pure component are given by the following Antoine equations: For Benzene: 1211.03 bg,,R" -6.91-: T(C) + 220.70 For Toluene: 1343.94 bg10 P - 6.95- T('C)+219.38 (i) Calculate the vapor pressure of the solution. (ii) Calculate the dew point pressure. (iii) Calculate the composition of the liquid at dew point. (b) Wet solids are dried from 30% to 8% moisture under constant drying conditions in 16.9 hours. The drying rate in the falling-rate period is a straight line through the origin. The critical and the equilibrium moisture contents are 15% and 5% respectively. Assuming a sample of same type of solids with initial moisture content of 33% is dry under the same drying conditions; determine the final moisture content of solid if it is only allowed to dry for 14 hrs.
(a) Benzene and toluene form an ideal solution at 70 °C. The solution consists of 50% mole benzene. The vapor pressures (in mm Hg) for the pure component are given by the following Antoine equations: For Benzene: 1211.03 bg,,R" -6.91-: T(C) + 220.70 For Toluene: 1343.94 bg10 P - 6.95- T('C)+219.38 (i) Calculate the vapor pressure of the solution. (ii) Calculate the dew point pressure. (iii) Calculate the composition of the liquid at dew point. (b) Wet solids are dried from 30% to 8% moisture under constant drying conditions in 16.9 hours. The drying rate in the falling-rate period is a straight line through the origin. The critical and the equilibrium moisture contents are 15% and 5% respectively. Assuming a sample of same type of solids with initial moisture content of 33% is dry under the same drying conditions; determine the final moisture content of solid if it is only allowed to dry for 14 hrs.
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:(a)
Benzene and toluene form an ideal solution at 70 °C. The solution consists of
50% mole benzene. The vapor pressures (in mm Hg) for the pure component
are given by the following Antoine equations:
For Benzene:
1211.03
bg,,R" -6.91-:
T(C) + 220.70
For Toluene:
1343.94
bg10 P - 6.95-
T('C)+219.38
(i)
Calculate the vapor pressure of the solution.
(ii)
Calculate the dew point pressure.
(iii) Calculate the composition of the liquid at dew point.
(b)
Wet solids are dried from 30% to 8% moisture under constant drying
conditions in 16.9 hours. The drying rate in the falling-rate period is a straight
line through the origin. The critical and the equilibrium moisture contents are
15% and 5% respectively. Assuming a sample of same type of solids with
initial moisture content of 33% is dry under the same drying conditions;
determine the final moisture content of solid if it is only allowed to dry for 14
hrs.
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