Computer Science
Scientific paper
Nov 1969
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969gecoa..33.1415w&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 33, Issue 11, pp.1415-1427
Computer Science
5
Scientific paper
The excess Gibbs energies and entropies of mixing of NaCl-KCl liquids have been calculated using previously derived mixing parameters of the crystalline solutions and the temperature and composition of the minimum (657°C, 48·5 mole % KCl) in the melting region. Margules parameters of the liquid based on the present formulation differ by 1 kcal at 800°C from the values obtained in electrochemical studies. Solidus and liquidus curves calculated from these results are compared with experimental data from 12 previous studies of the melting region. Alkali buffer potentials, ( K - Na ), in this system, calculated from the mixing properties of the liquid, range from -14 · 6 ± 0 · 5 kcal at 796°C ( N KCl 0), to -5 · 90 ± 0 · 05 kcal at the minimum, to +7 · 6 ± 0 · 5 kcal at 770°C ( N KCl 1).
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