diffusing since it is insoluble in one boundary. The total pressure is 1.013 x 105 Pa and the temperature is 298 K. The partial pressure of ammonia at one point is 1.333 x 104 Pa, and at the other point 20 mm away it is 6.666 x 10³ Pa. The DAB for the mixture at 1.013 x 105 Pa and 298 K is 2.30 x 10-5 m²/s. a) Calculate the flux of ammonia in kg mol/s.m² b) Calculate the flux of nitrogen in kg mol/s.m² (Assume, nitrogen also diffuse; that is, both boundaries are permeable to both gases). c) Compare and justify your answer in (a) and (b).
diffusing since it is insoluble in one boundary. The total pressure is 1.013 x 105 Pa and the temperature is 298 K. The partial pressure of ammonia at one point is 1.333 x 104 Pa, and at the other point 20 mm away it is 6.666 x 10³ Pa. The DAB for the mixture at 1.013 x 105 Pa and 298 K is 2.30 x 10-5 m²/s. a) Calculate the flux of ammonia in kg mol/s.m² b) Calculate the flux of nitrogen in kg mol/s.m² (Assume, nitrogen also diffuse; that is, both boundaries are permeable to both gases). c) Compare and justify your answer in (a) and (b).
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:Ammonia gas is diffusing through nitrogen under steady-state conditions with nitrogen non-
diffusing since it is insoluble in one boundary. The total pressure is 1.013 x 105 Pa and the
temperature is 298 K. The partial pressure of ammonia at one point is 1.333 x 104 Pa, and at the
other point 20 mm away it is 6.666 x 10³ Pa. The DAB for the mixture at 1.013 x 105 Pa and 298 K
is 2.30 x 10-5 m²/s.
a) Calculate the flux of ammonia in kg mol/s.m²
b) Calculate the flux of nitrogen in kg mol/s.m² (Assume, nitrogen also diffuse; that is, both
boundaries are permeable to both gases).
c) Compare and justify your answer in (a) and (b).
d) Partial pressure of ammonia at a point 1.2 cm from either end.
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