Use the condition of no net current to solve for the potential.

Two solutions are separated by a porous sintered disk (1 mm thick) that permits diffusion across the disk. On one side we have a mixture of 1 M HCl and 1 M BaCl2 while on the other side we have pure water. It is required to find the flux across the system. Both salts are completely ionized and diffuse as H+, Cl−, and Ba2+ across the disk. Set up the model to compute the fluxes. From the fluxes, find the effective diffusivities of these ions across the disk. Use for the ionic diffusivity for Ba ions 0.85×10−9 m2/s. For the other ions, use the values in Table 22.1. Use the condition of no net current to solve for the potential. Answers: H, 6.14; Cl, 2.2268; and Ba, 0.271.

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set up and solve a case-study example of the light-intensity distribution in a photochemical reactor.

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Write a critique on this technique of secondary-emission measurement.

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set up a mass transfer model and evaluate the variation of the local mass transfer coefficient at various locations in the plate.

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