THERMODYNAMIC PROPERTIES OF NACL SOLUTIONS AT TEMPERATURES LOWER THAN 0°C
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dc.contributor.author | Akinfiev N.N. | |
dc.contributor.author | Mironenko M.V. | |
dc.contributor.author | Dunaeva A.N. | |
dc.contributor.author | Grant S.A. | |
dc.date.accessioned | 2021-01-31T12:50:12Z | |
dc.date.available | 2021-01-31T12:50:12Z | |
dc.date.issued | 2000 | |
dc.identifier | https://elibrary.ru/item.asp?id=14996932 | |
dc.identifier.citation | Geohimiya, 2000, 38, 7, 746-759 | |
dc.identifier.issn | 0016-7525 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/24149 | |
dc.description.abstract | The limiting values of NaCl(aq) heat capacity, c0p, 2, at temperatures from 0 to - 25°C and volume, V02 , from 0 to - 15°C, were obtained by the mathematical processing of experimental determinations of heat capacity and density of sodium chloride solutions at temperatures lower than 0°C. Proceeding from these results, the parameters of the Helgeson-Kirkham-Flowers (HKF) equation of state were refined for the species Na+. The Gibbs free energies Of Na+ and Cl- calculated by the HKF equation together with the modified approximations of Pitzer's parameters for calculation of activity coefficients allowed numerical reproduction of the experimental NaCl-H2O phase diagram. This proves the validity of the HKF model for the extrapolation of the limiting thermodynamic properties of aqueous species into low temperatures. The thermodynamic parameters of Na+ and C1- derived in this work enable precise thermodynamic calculations in the system NaCl-H2O at temperatures from 100 to -30°C and a wide range of electrolyte concentration. | |
dc.title | THERMODYNAMIC PROPERTIES OF NACL SOLUTIONS AT TEMPERATURES LOWER THAN 0°C | |
dc.type | Статья |
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