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Write down Fick's second law of diffusion. Using one dimensional profile sketches or otherwise, discuss the...

Write down Fick's second law of diffusion. Using one dimensional profile sketches or otherwise, discuss the solutions to this equation for the two cases when the diffusing species has (i) a constant and (ii) a finite surface concentration during diffusion. Explain how the dependence of temperature of diffusion is captured in these equations.

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Answes Ficks second laua of diffusion--> u of ch Ffuson descobea the rake of accumulaHon (or cleplei on) of concentaHon uoir uslthin the volum as Proportional to the local curvature of the coneentreHon adi ent CS-Co t-o Species Surface concentct on/concentr ① when diffusions ecieg has constant. con nhaHon du in tifteon X2 nWedpPusron spec ies has hinit curfac e Concmbafion posi Hon.x, Pleaje rie he anwey,

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