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Problem 2 (Plawsky 2.6/2.7) Prove that in a binary mixture whose total concentration of species, ct, remains constant, there is only one diffusion coefficient; Dab=Dba.

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Problem 2 (Plawsky 2.6/2.7) Prove that in a binary mixture whose total concentration of species, ct, remains constant, there is only one diffusion coefficient; Dab=Dba. Hint In a binary mixture we have Na=Dabc+xa(Na+Nb)Nb=Dbacb+xb(Na+Nb)

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