Activity coefficients for the system NaCl+Na2SO4+H2O at various temperatures. Application of Pitzer's equations |
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| Authors: | Pavel Ya Tishchenko Alexander S Bychkov Andrea Hrabéczy-Páll Klára Tóth Ernö Pungor |
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| Institution: | (1) Pacific Oceanological Institute, Far Eastern Branch, USSR Academy of Sciences, Vladivostok, USSR;(2) Institute for General and Analytical Chemistry, Technical University, Budapest, Hungary |
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| Abstract: | The mean activity coefficients of NaCl in the system NaCl+Na2SO4+H2O at various compositions were determined in the temperature range 5–45°C from the emf of potentiometric cells. By processing the results using Pitzer's equations the mixing parameters describing the non-ideal behavior of electrolytes were calculated. The temperature coefficients of the mixing parameters were determined and found not to be significant. The mixing parameters and temperature coefficients calculated for the binary mixture can be used to describe the behavior of multicomponent systems containing NaCl and Na2SO4, and eventually sea water. |
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| Keywords: | Pitzer's equations emf data mean activity coefficients sodium chloride mixing parameters temperature coefficients sodium chloride and sulphate binary system |
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