Thermodynamic representation dilute solutions

In 1945, Marcel Pourbaix submitted a Ph.D. dissertation entitled Thermodynamics in dilute solutions graphical representation of the role of pH and potential. It was initially rejected, or so the legend goes. Fortunately for corrosion scientists... 

The dilute solutions of elements in solid iron are, at present, the only system for which the thermodynamics has been reasonably well worked out experimentally. The remainder of this section will therefore be devoted to the diagrammatic representation of data for these systems which have been evolved by Richardson... 

The partial molar volume, which is a very important quantity to probe the response of the free energy (or stability) of protein to pressure, including the so-called pressure denaturation, is not a canonical thermodynamic quantity for the (V, T) ensemble, since volume is an independent thermodynamic variable of the ensemble. The partial molar volume of protein at infinite dilution can be calculated from the Kirkwood-Buff equation [20] generalized to the site-site representation of liquid and solutions [21,22],... 

The experimentally measured values of Aduhcum are further plotted against the equilibrium solute molality m2 and only such a representation may have clear physical meaning from a thermodynamic standpoint. Nevertheless, it is sometimes more useful to present the enthalpy of dilution curve in terms of Aduhcum as a function of the injection number k, especially when the dependence of Aduhcum vs m2 is linear or contains several linear portions (cf.. Fig. 6.21). 

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