Organic acids in hydrothermal solutions; standard molal thermodynamic properties of carboxylic acids and estimates of dissociation constants at high temperatures and pressures

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ID: 292865
1995
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Abstract
Experimental standard partial molal volumes, heat capacities, and entropies as well as apparent standard partial molal enthalpies and Gibbs free energies of mono- and dicarboxylic acids and their anions at low temperatures and pressures are used to generate correlations for predicting the same properties at high temperatures and pressures for 59 carboxylic and 18 hydroxyacid species with the revised Helgeson-Kirkham-Flowers (HKF) equation of state. Predicted equilibrium dissociation constants are compared with experimental values from the literature and tabulated as functions of pressure and temperature for 25 carboxylic acids and nine hydroxyacids. Close agreement between independent predictions and experimental data supports the generality of the computational techniques and the accuracy of predicted data. These results allow incorporation of a wide variety of organic acids into quantitative interpretations of geochemical processes.
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openalex_W2326380944 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Everett L. Shock
Journal american journal of science
Year 1995
DOI
10.2475/ajs.295.5.496
URL
https://ajs.scholasticahq.com/article/60689.pdf
Keywords Keywords not found

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