(4) If the air is cooled to 15°C, what is the mole fraction of water in the gas phase at the end of the process, what is the final total pressure in the sealed vessel and how many moles of water condenses? gas (air + water vapor) IL gas (air + water vapor) Cooler 1 atm, 90°C water (liquid)
(4) If the air is cooled to 15°C, what is the mole fraction of water in the gas phase at the end of the process, what is the final total pressure in the sealed vessel and how many moles of water condenses? gas (air + water vapor) IL gas (air + water vapor) Cooler 1 atm, 90°C water (liquid)
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
Related questions
Question
answer q4
Transcribed Image Text:Air containing 20.0 mole% water vapour at an initial pressure of 1 atm absolute with the
temperature of 90.0 °C in a 1 litter sealed vessel: (Assume ideal-gas behaviour)
(1) Determine the status of the vapour in the air. Is it superheated vapour or saturated
vapour? Provide justifications.
(2) Based on (1), if it is superheated vapour, calculate the degrees of superheat of the air;
If it is saturated vapour, calculate the molal humidity. Molal Humidity is defined as the
ratio of moles of vapour(condensable) to the moles of dry(non-condensable) gas
(3) If the air is slowly cooled at constant pressure, at what temperature would be the first
drop of water form?
(4) If the air is cooled to 15°C, what is the mole fraction of water in the gas phase at the
end of the process, what is the final total pressure in the sealed vessel and how many
moles of water condenses?
gas (air water vapor)
IL gas (air + water vapor)
Cooler
1 atm, 90°C
water (liquid)
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