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Question: diffusion of a through stagnant b and effect f a...

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Diffusion of A Through Stagnant B and Effect f a Type of Boundary on 19.13. Ammonia gas is diffusing through N2 under steady-state conditions with N2 Flux ondiffusing since it is insoluble in one boundary. The total pressure is 1.013 x 10 Pa and the temperature is 298 K. The partial pressure of NH3 at one point is 1333 x 10* 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 10 Pa and 298 K is 2.30 x 10-Sm2/s. (a) Calculate the flux of NHs in kg mol/s m2. (b) Do the same as (a) but assume that N2 also diffuses; that is, both bound- aries are permeable to both gases and the flux is equimolar counterdiffu- sion. In which case is the flux greater?
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