Computer Science
Scientific paper
Dec 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977gecoa..41.1739m&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 41, Issue 12, pp.1739-1744
Computer Science
Scientific paper
The activities of KCl and of H 2 O in Dead Sea water were estimated according to several approaches dealing with multicomponent electrolyte solutions. The activity of H 2 O, both measured directly via its vapor pressure and calculated theoretically, is 0.754 ± 0.004 for brine of density 1.207 ± 0.003gcm -3 at 25°C. The mean ionic activity of KCl in this brine ranges from 0.876 to 1.199 according to various treatments. These correspond to binary aqueous solutions 8.6-12.1 times richer than the brine. The brine cannot be simultaneously in equilibrium with respect to both H 2 O and KCl with such binary solutions, so a hypothetically perfect semipermeable membrane cannot lead to a state of equilibrium between the brine and aqueous KCl of any concentration.
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