Question

Oxygen diffuses through two planar membranes in juxtaposition from a higher concentration CH to a lower concentration CL. The thicknesses of both membranes are d, and the area is A. The diffusivities of oxygen in the two membranes are D1 and D2 (D1 > D2). Obtain an expression for the steady state concentration profile in the two membranes C1(x) and C2(x), in terms of CH and CL, and sketch. What is the rate of oxygen consumption (in moles/time) in terms of CH and CL?

CH is C sub H.

CL is C sub L.

Answer 1