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Penulis Topik: Thermodynamic Driving Force and One-Way Fluxes in Reversible Processes  (Dibaca 4174 kali)

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Relationship between Thermodynamic Driving Force and One-Way Fluxes in Reversible Processes
Daniel A. Beard, Hong Qian

Chemical reaction systems operating in nonequilibrium open-system states arise in a great number of contexts, including the study of living organisms, in which chemical reactions, in general, are far from equilibrium. Here we introduce a theorem that relates forward and reverse fluxes and free energy for any chemical process operating in a steady state.

This relationship, which is a generalization of equilibrium conditions to the case of a chemical process occurring in a nonequilibrium steady state in dilute solution, provides a novel equivalent definition for chemical reaction free energy. In addition, it is shown that previously unrelated theories introduced by Ussing and Hodgkin and Huxley for transport of ions across membranes, Hill for catalytic cycle fluxes, and Crooks for entropy production in microscopically reversible systems, are united in a common framework based on this relationship.

Full text : Relationship between Thermodynamic Driving Force and One-Way Fluxes in Reversible Processes

 

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