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(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 bg10 Rat = 6.91-, T(°C) + 220.70 For Toluene: 1343.94 bg10 Pat = 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 bg10 Rat = 6.91-, T(°C) + 220.70 For Toluene: 1343.94 bg10 Pat = 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
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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(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 bg10 Rat = 6.91-, T(°C) + 220.70 For Toluene: 1343.94 bg10 Pat = 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.
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 bg10 Rat = 6.91-, T(°C) + 220.70 For Toluene: 1343.94 bg10 Pat = 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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