Abstract
We have summarized results of many experimental investigations of the thermodynamics of ionization of H2O(liq.) from 0–300°C and from 1.0 atm to nearly 8000 atm. Results of these investigations (equilibrium constants, enthalpies of ionization, heat capacities, partial molal volumes, and compressibilities) have been used for a number of thermodynamic calculations. It is particularly noteworthy that it is possible to use thermal data from 0–145°C with an equilibrium constant for 25°C in calculating reasonably accurate equilibrium constants for temperatures as high as 300°C. Similarly, it is possible to use volumetric data that refer to 1.0 atm in calculating useful equilibrium constants that apply for pressures as high as 2000 atm.
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Much of the work reported here was done while the author was on leave at the University of Lethbridge.
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Olofsson, G., Hepler, L.G. Thermodynamics of ionization of water over wide ranges of temperature and pressure. J Solution Chem 4, 127–143 (1975). https://doi.org/10.1007/BF00649154
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DOI: https://doi.org/10.1007/BF00649154