Abstract
From measurements of the solubility of argon in aqueous solutions of the complexion electrolyte t-[Co(en)2NCSCl]Br at 25°C, the Setschenow parameter for this system is found to be +0.336. Using the scaled-particle theory of the salt effect with this value ofk 5 and the Waddington crystal radius of the Br− ion, 1.98 Å, the radius of the complex cation is calculated to be 3.71 Å. This value is in reasonably good agreement with that estimated from scale models of the t-[Co(en)2-NCSCl]+ cation, about 3.9 Å. It is somewhat larger than the radius calculated from various semiempirical equations relating the molal volume of an ion at infinite dilution to its radius; values of r obtained in this manner range from 3.32 to 3.66 Å.
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Abstracted, in part, from D.P.'s M.S. thesis, June 1971.
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Masterton, W.L., Polizzotti, D. & Welles, H. The solubility of argon in aqueous solutions of a complex-ion electrolyte. J Solution Chem 2, 417–423 (1973). https://doi.org/10.1007/BF00713254
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DOI: https://doi.org/10.1007/BF00713254