Abstract
Models for Ph4AsCl (aq.) which incorporate a Gurney cosphere overlap term are fitted to the published osmotic coefficient data. Models with predominantly + − and those with predominantly ++ ion pairing are about equally successful. Further calculations are then made to see how difficult it might be to distinguish between the models by scattering x rays, electrons, or neutrons from the aqueous solution in the rather low concentration range in which the models might be realistic. The x-ray experiment is promising, but high precision in the small-angle region would be necessary.
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Friedman, H.L., Zebolsky, D.M. & Kalman, E. Calculated X-ray scattering functions for models for aqueous Ph4AsCl which fit the osmotic coefficient data. J Solution Chem 5, 853–865 (1976). https://doi.org/10.1007/BF01167239
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DOI: https://doi.org/10.1007/BF01167239