Question: In a two component system, species A diffuses through stagnant gas B . Assume that the diffusion is only in z - direction, and x

In a two component system, species A diffuses through stagnant gas B. Assume that the diffusion is only in z-direction, and xA=xA1 at z=z1 and xA=xA2 at z=z2 :
a. Write down the general flux equation for binary diffusion and find NA.(It should not be a function of NA or NB.)
b. Solve the resulting differential equation and find mole fraction profile.
c. Substitute xA into the flux equation.
In a two component system, species A diffuses through stagnant gas

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