Film Diffusion and Chemical Reaction

The interaction between diffusion of the starting material in the laminar gas film (1) and its reaction in the liquid film (2) can be described analogously to the treatment in Section 2.I.3.5. Assuming that A is converted in a first-order reaction (A + B(excess) —  

under the assumption of stationary nonequilibrium conditions, the particle flux of A that is consumed by chemical reaction is equal to that transported through the phase boudary at x = 0. Under the boundary conditions  

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