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Mass Transfer and Separation · Question 1 of 1Score: 0/0

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A. Molecular & convective diffusion

Species A diffuses at steady state through a stagnant film of thickness δ = 0.005 m. The molecular diffusivity is D_AB = 0.00002 m²/s, and the molar concentration of A is C_A1 = 50 mol/m³ at one face (z = 0) and C_A2 = 20 mol/m³ at the other (z = δ), as shown. The molar flux N_A is most nearly:

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