Physics – Condensed Matter – Statistical Mechanics
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986gecoa..50.1445p&link_type=abstract
Geochimica et Cosmochimica Acta, Volume 50, Issue 7, p. 1445-1454.
Physics
Condensed Matter
Statistical Mechanics
14
Scientific paper
On the basis of the statistical mechanics of a two-component imperfect gas, a successive hydration model is developed for the NaCl ion-pair molecule in steam which fits satisfactorily an extensive array of experimental solubility data including the measurements of BISCHOFFet al. (1986) at the three-phase pressure from 300° to 503°C and other concordant measurements extending to 600°C at 290 bars. Some published experimental results depart substantially from the concordant set here selected. The theoretical basis of this model should make it useful for estimates at higher temperatures provided the mean hydration number and the total fluid density remain within the range corresponding to the fitted data. The measurements of BOONAR el al. (1985) at 500 bars and 800° and 825°C provide a test and the agreement with model predictions is good.
Pabalan Roberto T.
Pitzer Kenneth S.
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