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Consider a gaseous mixture of A diluted in B that is required for a chemical reaction to take place within a cylindrical porous solid catalyst with radius R = 1 cm and length L = 10 cm. Once gas A reaches the catalyst surface, it enters the solid and the A->B reaction takes place, at a rate given by (-RA)= k. At the catalyst surface, that is, at r= R, the concentration of A is CAS = 1x10^-2 mol/cm. The diffusion coefficient from A to B is 0.7 cm^2/s. Determine: a) The concentration profile when k= 0, 0.001, 0.01 and 0.1 mol s cm

Consider a gaseous mixture of A diluted in B that is required for a chemical reaction to take place within a cylindrical porous solid catalyst with radius R = 1 cm and length L = 10 cm. Once gas A reaches the catalyst surface, it enters the solid and the A->B reaction takes place, at a rate given by (-RA)= k. At the catalyst surface, that is, at r= R, the concentration of A is CAS = 1x10^-2 mol/cm. The diffusion coefficient from A to B is 0.7 cm^2/s. Determine: a) The concentration profile when k= 0, 0.001, 0.01 and 0.1 mol s cm

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Consider a gaseous mixture of A diluted in B that is required for a chemical reaction to take place within a cylindrical porous solid catalyst with radius R = 1 cm and length L = 10 cm. Once gas A reaches the catalyst surface, it enters the solid and the A->B reaction takes place, at a rate given by (-RA)= k. At the catalyst surface, that is, at r= R, the concentration of A is CAS = 1x10^-2 mol/cm. The diffusion coefficient from A to B is 0.7 cm^2/s. Determine: a) The concentration profile when k= 0, 0.001, 0.01 and 0.1 mol s cm b) The molar flux of species A when k=0, 0.001, 0.01 and 0.1 mol/s cm c) The molar flux of species A for 1 m? d) The average concentration of the system e) Establish which stage of the process is the limiting f) Graph how the concentration profile and the flux profile would be, analyze and discuss your results.
Transcribed Image Text:Consider a gaseous mixture of A diluted in B that is required for a chemical reaction to take place within a cylindrical porous solid catalyst with radius R = 1 cm and length L = 10 cm. Once gas A reaches the catalyst surface, it enters the solid and the A->B reaction takes place, at a rate given by (-RA)= k. At the catalyst surface, that is, at r= R, the concentration of A is CAS = 1x10^-2 mol/cm. The diffusion coefficient from A to B is 0.7 cm^2/s. Determine: a) The concentration profile when k= 0, 0.001, 0.01 and 0.1 mol s cm b) The molar flux of species A when k=0, 0.001, 0.01 and 0.1 mol/s cm c) The molar flux of species A for 1 m? d) The average concentration of the system e) Establish which stage of the process is the limiting f) Graph how the concentration profile and the flux profile would be, analyze and discuss your results.
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