Prove that all forms of Fick’s Law agree with thermodynamics; that is, “At equilibrium, the concentration of all species throughout the system should be uniform.” Prove that in a binary mixture whose...

Prove that all forms of Fick’s Law agree with thermodynamics; that is, “At equilibrium, the concentration of all species throughout the system should be uniform.”

Prove that in a binary mixture whose total concentration of species, ct, remains constant, there is only one diffusion coefficient; Dab = Dba.