Regression of experimental solubility data with theoretical equations providing for the
intrinsic properties of SiO/sub 2/and the calorimetric consequences of electrostriction
collapse and solvation affords close approximation of the thermodynamic behavior of
aqueous silica to 5 kb and 600/sup 0/C. The standard molal volume of aqueous silica (V/sup
0/) decreases as a sigmoid function of temperature at constant pressure but increases as
pressure increases at constant temperature. In contrast, the standard molal heat capacity …

CALCULATION OF THE THERMODYNAMIC PROPERTIES OF AQUEOUS SILICA AND
THE SOLUBILITY OF QUARTZ AND ITS POLYMORPHS AT HIGH PRESSURES AND
TEMPERATURES … CALCULATION OF THE THERMODYNAMIC PROPERTIES OF
AQUEOUS SILICA AND THE SOLUBILITY OF QUARTZ AND ITS POLYMORPHS AT HIGH
PRESSURES AND TEMPERATURES … CALCUL DES PROPRIETES
THERMODYNAMIQUES DE LA SILICE AQUEUSE ET DE LA SOLUBILITE DU QUARTZ ET …