Answered: Q1/ Air containing 5% vol CO, is…

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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