%0 Journal Article %1 Holmes1983 %A Holmes, H. F. %A Mesmer, R. E. %D 1983 %J The Journal of Physical Chemistry %K CaCl2 1983 KCl LiCl aqueous thermodynamic properties %N 7 %P 1242-1255 %R 10.1021/j100230a030 %T Thermodynamic properties of aqueous solutions of the alkali metal chlorides to 250.degree.C %U http://dx.doi.org/10.1021/j100230a030 %V 87 %X Osmotic Coefficients of LiCNaq), KCl(aq), and CsCUaq) have been determined, at 225 and 250 "C, by isopiesticcomparison with NaCl(aq). Equilibrium molalities ranged up to 8 mol kg-'. Isothermal osmotic data can beprecisely described by the ion interaction model of Pitzer. The osmotic, and activity, coefficients continueto decrease with increasing temperature with LiCl(aq) retaining a measure of individuality when comparedto the other alkali metal chlorides. Our present results have been compared and combined with previouslyreported thermodynamic data (isopiestic and vapor pressure measurements, electrochemical cell potentials,freezing temperature determinations, enthalpies of solution and dilution, and heat capacities) within theframework of the ion interaction model. The resulting set of equations provides a thermodynamic description,essentially within the accuracy of the reported experimental results, of LiCl(aq), KCl(aq), and CsCKaq) as afunction of temperature (from 0 to 250 "C) and molality (up to about 6 mol kg-'1. The ion interaction parameterP ( O ) was in the order LiCl > NaCl > KC1 > CsCl at all temperatures. The same trend was observed for theexcess thermodynamic properties 4, y, and 4L. Contributions of the short-range interactions to the activitycoefficient (In y - f f ) are shown to be linearly related to the reciprocal radius of the cation. Excess free energydata for the alkali metal chlorides to 250 "C can be modeled surprisingly well with a single parameter-thehard-core diameter-using the theoretical form of the ion interaction model.

@article{Holmes1983, abstract = {Osmotic Coefficients of LiCNaq), KCl(aq), and CsCUaq) have been determined, at 225 and 250 "C, by isopiesticcomparison with NaCl(aq). Equilibrium molalities ranged up to 8 mol kg-'. Isothermal osmotic data can beprecisely described by the ion interaction model of Pitzer. The osmotic, and activity, coefficients continueto decrease with increasing temperature with LiCl(aq) retaining a measure of individuality when comparedto the other alkali metal chlorides. Our present results have been compared and combined with previouslyreported thermodynamic data (isopiestic and vapor pressure measurements, electrochemical cell potentials,freezing temperature determinations, enthalpies of solution and dilution, and heat capacities) within theframework of the ion interaction model. The resulting set of equations provides a thermodynamic description,essentially within the accuracy of the reported experimental results, of LiCl(aq), KCl(aq), and CsCKaq) as afunction of temperature (from 0 to 250 "C) and molality (up to about 6 mol kg-'1. The ion interaction parameterP ( O ) was in the order LiCl > NaCl > KC1 > CsCl at all temperatures. The same trend was observed for theexcess thermodynamic properties 4, y, and 4L. Contributions of the short-range interactions to the activitycoefficient (In y - f f ) are shown to be linearly related to the reciprocal radius of the cation. Excess free energydata for the alkali metal chlorides to 250 "C can be modeled surprisingly well with a single parameter-thehard-core diameter-using the theoretical form of the ion interaction model.}, added-at = {2011-01-19T18:06:22.000+0100}, author = {Holmes, H. F. and Mesmer, R. E.}, biburl = {https://www.bibsonomy.org/bibtex/211357f45a3beb210f4e191ba7cb78235/thorade}, description = {Thermodynamic properties of aqueous solutions of the alkali metal chlorides to 250.degree.C - The Journal of Physical Chemistry (ACS Publications)}, doi = {10.1021/j100230a030}, eprint = {http://pubs.acs.org/doi/pdf/10.1021/j100230a030}, interhash = {99b63fbb624229052ca42e3a0daa1773}, intrahash = {11357f45a3beb210f4e191ba7cb78235}, journal = {The Journal of Physical Chemistry}, keywords = {CaCl2 1983 KCl LiCl aqueous thermodynamic properties}, number = 7, pages = {1242-1255}, timestamp = {2011-01-19T18:06:22.000+0100}, title = {Thermodynamic properties of aqueous solutions of the alkali metal chlorides to 250.degree.C}, url = {http://dx.doi.org/10.1021/j100230a030}, volume = 87, year = 1983 }