Lecture_18_2011

Lecture_18_2011 - natural variables of that potential...

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Introduction to Biophysics Lecture 16 Osmotic pressure
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Although the far-from-equilibrium condition of an organism represents an absolute precondition of life, nevertheless, subsystems in the organism exist, which can be properly calculated using equilibrium thermodynamics.
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Expansion work PV; TS – energy from the environment
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Name Symbol Formula Natural variables Internal energy U S , V ,{ N i } Helmholtz free energy F U TS T , V ,{ N i } Enthalpy H U + pV S , p ,{ N i } Gibbs free energy G U + pV TS T , p ,{ N i } Landau Potential (Grand potential) Ω, Φ G U TS μ i N i T , V ,{μ i } The variables that are held constant in this process are termed the
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Unformatted text preview: natural variables of that potential Thermodynamic potentials The mathematical definition of the total differential is of great physical importance to thermodynamics: For this reason it is important that this property of a function is able to be mathematically proven: Mathematical indicator to determine whether dn is a total differential Cauchy condition Reading: Nelson 7.2.1 Home work: Nelson problems 7.3, 7.4...
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Lecture_18_2011 - natural variables of that potential...

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