Q1/ Air containing 5% vol CO, is flowing at the rate of 0.30 m'/s at 27c° and total pressure P 1.2 atm. calculate the mass rate of CO (kg/s).
Q1/ Air containing 5% vol CO, is flowing at the rate of 0.30 m'/s at 27c° and total pressure P 1.2 atm. calculate the mass rate of CO (kg/s).
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:Q1/ Air containing 5% vol CO, is flowing at the rate of 0.30 m'/s at 27c° and total
1.2 atm. calculate the mass rate of CO, (kg/s).
pressure P
Q2/ CO, is injected in a large volume of pure water at 0 c° and 2 bars pressure .
Calculate the driving force for mass transfer of CO, in water if its solubility in
-1
water - 0.004 bar.
Q3/ the following equation gives the concentration profile of A diffusing through
semi-infinite medium that has initial concentration CA;
0 and a constant
interfacial concentration CA, = 104 kmol/m³.
CA(Z, t) = CA, erfe (O )
that
Experimentai test shows 0=0.70 for a fixed value of z
Where O
2 Dt
and t. Calculate the value of CA(z, t).
Q4/ A drop of TCE is dropped in a vessel containing water (20 c°) 2m deep. the
drop is falling at constant velocity 20 mm/s. The drop is initially of mass m; (mg)
is completely dissolved when it reached the bottom of the vessel. If the dissolution
rate of the drop dm/dt 1.5 mg/s. Calculate the initial mass of the drop.
%3|
Q5/ A common procedure for increasing the moisture content of air is to bubble it
through a column of water. Assume the air bubbles are spheres of radius r%3D
and to be in thermal equilibrium with water at 25 c°. How long should the bubbles
remain in water to achieve a vapor concentration at the center that is 98% of the
maximum possible ( saturated concentration ) ? the air is dry when it enters the
water. DAB = 0.26x10 m/s (at 25 c°).
1mm
alas le: Equation (2.47) chapter 2 is applicable.
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