Thermodynamic Properties of Aqueous

The chemistry of plutonium ions in solution has been thoroughly studied and reviewed (30,94—97). Thermodynamic properties of aqueous ions of Pu are given in Table 8 and in the Uterature (64—66). The formal reduction potentials in aqueous solutions of 1 Af HCIO or KOH at 25°C maybe summarized as follows (66,86,98—100) ... 

Nemethy, G. The Structure of Water and the Thermodynamic Properties of Aqueous Solutions, in Annali dell Instituto Superiore die Sanita (ed. Marini-Bettolo, Vd.), VI Roma, Institute Superiore dell Sanita, 1970... 

R. C. Pemberton and C. J. Mash. "Thermodynamic Properties of Aqueous Non-Electrolyte Mixtures II. Vapour Pressures and Excess Gibbs Energies for Water-)- Ethanol at 303.15 to... 

Values taken from S. Glasstone. Thermodynamics for Chemists. D. Van Nostrand Company Inc., Toronto, p. 443 (1947). The values tabulated in this reference were taken from D. N. Craig and G. W. Vinal, J. Res. Natl. Bur. Stand.. Thermodynamic Properties of Sulfuric Acid Solutions and Their Relation to the Electromotive Force and Heat of Reaction of the Lead Storage Battery", 24, 475-490 (1940). More recent values at the higher molality can be found in W. F. Giauque. E. W. Hornung. J. E. Kunzler and T. R. Rubin, The Thermodynamic Properties of Aqueous Sulfuric Acid Solutions and Hydrates from 15 to 300° K", J. Am. Chem. Soc.. 82, 62-70 (1960). 

Fig. 2.37. Phase diagram for Ca0-Na20 Si02-(Al203)-H20 system in equilibrium with quartz at 400°C and 400 bars. Plagioclase solid solution can be represented by the albite and anorthite fields, whereas epidote is represented by clinozoisite. Note that the clinozoisite field is adjacent to the anorthite field, suggesting that fluids with high Ca/(H+) might equilibrate with excess anorthite by replacing it with epidote. The location of the albite-anorthite-epidote equilibrium point is a function of epidote and plagioclase composition and depends on the model used for calculation of the thermodynamic properties of aqueous cations (Berndt et al., 1989).

P. Duby, The Thermodynamic Properties of Aqueous Inorganic Copper Systems, Int. Copper Res. Assoc., p. 56,1977. 

Tomasic V, Chittofrati A, Kallay N (1995) Thermodynamic properties of aqueous solutions of perfluorinated ionic surfactants. Colloids and Surfaces, Physicochemical and Engeneering Aspects 104 95-99... 

Current Status of Experimental Knowledge of Thermodynamic Properties of Aqueous Solutions... 

The list of 145 references at the end of this chapter has been collected to help those looking for numerical values of thermodynamic properties of aqueous solutions for industrial applications. The emphasis has been primarily on items published since 1964, although a few older ones of special utility have been included. 

Thermodynamic Properties of Aqueous Organic Systems" Engineering Sciences Data Unit, Ltd., London, 1978-79. 

Other thermodynamic properties of aqueous solutions are being evaluated. A recent publication reports values calculated for the association constants of aqueous ionic species at 298 K for alkaline earth salts (Staples, 1978). 

The techniques used in the critical evaluation and correlation of thermodynamic properties of aqueous polyvalent electrolytes are described. The Electrolyte Data Center is engaged in the correlation of activity and osmotic coefficients, enthalpies of dilution and solution, heat capacities, and ionic equilibrium constants for aqueous salt solutions. 

Duby, P. "The Thermodynamic Properties of Aqueous Inorganic Copper Systems", International Copper Research Association New York, 1977. 

The problem of measuring the thermodynamic properties of aqueous transition metal ions above 100 C has also received some attention with studies on Fe + complexing with Cl (46), Br (47) and SO - (48) up to 150°C and the formation of anionic hydroxy complexes of Pb2+ up to 300°C (49). 

Shock EL, Sassani DC, Willis M, Sverjensky DA (1997) Inorganic species in geologic fluids Correlations among standard molal thermodynamic properties of aqueous cations and hydroxide complexes. Geochim... 

Sverjensky DA, Shock EL, Helgeson HC (1997) Prediction of flie thermodynamic properties of aqueous metal complexes to 1000°C and 5 kb. Geochim Cosmochim Acta 61 1359-1412 Tarutani T, Clayton RN, Mayeda TK (1969) The effect of polymorphism and magnesium substitution on oxygen isotope fractionation between calcium carbonate and water. Geochim Cosmochim Acta 33 987-996... 

Shock E. L. and Koretsky C. M. (1995). Metal-organic complexes in geochemical processes Estimation of standard partial molal thermodynamic properties of aqueous complexes between metal cations and monovalent organic acid ligands at high pressures and temperatures. Geochim. Cosmochim. Acta, 59 1497-1532. 

Walther J. V. and Helgeson H. C. (1977). Calculation of the thermodynamic properties of aqueous silica and the solubility of quartz and its polymorphs at high pressures and temperatures. Amer. Jour. Set, 277 1315-1351. 

As is often the case, we have become involved in microemulsions somwehat by accident. In the last five years or so we have been making systematic studies of the thermodynamic properties of aqueous organic mixtures and of electrolytes in these mixed solvents. Of particular interest were our heat capacity measurements. With a differential flow microcalorimeter it is possible to... 

Abstract—This paper is an analysis of measurements of the thermodynamic properties of aqueous solutions of non-electrolytes, which has been made in order to establish both the relative strength of different kinds of hydrogen bonds in such solutions and the correlation between bond-strengths and the phase-behaviour of the solutions. The thermodynamic properties are compared with the results of statistical theories of solutions and with the properties of more simple solutions. 

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