TY - JOUR
T1 - Organic acids in hydrothermal solutions
T2 - standard molal thermodynamic properties of carboxylic acids and estimates of dissociation constants at high temperatures and pressures
AU - Shock, E. L.
PY - 1995
Y1 - 1995
N2 - 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. The results allow incomporation of a wide variety of organic acids into quantitative interpretations of geochemical processes. -from Author
AB - 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. The results allow incomporation of a wide variety of organic acids into quantitative interpretations of geochemical processes. -from Author
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U2 - 10.2475/ajs.295.5.496
DO - 10.2475/ajs.295.5.496
M3 - Article
C2 - 11540132
AN - SCOPUS:0028976031
SN - 0002-9599
VL - 295
SP - 496
EP - 580
JO - American journal of science
JF - American journal of science
IS - 5
ER -