Browsing by Author "Paterson, Lutfullah Russell"

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Transport in Aqueous Solutions of Group IIB Metal Salts (298.15 K): Part 3.—Isotopic Diffusion Coefficients for Cadmiuin-115 Ions in Aqueous Cadmium Iodide
(Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1978, 74 (1), 1978) Paterson, Lutfullah Russell
Cadmium isotopic diffusion coefficients (Daa) were determined in aqueous cadmium iodide in the concentration range 0.1–0.6 mol dm–3. Daa passes through two maxima, one below 0.1 mol dm–3, the other at 0.4 mol dm–3. Irreversible thermodynamic analysis shows that these maxima are due to positive fluctuations in the isotope-to-isotope coupling contributions to Daa. For these studies a modified diaphragm cell technique was developed.
Transport in Aqueous Solutions of Group IIB Metal Salts (298.15 K): Part 4—Interpretation and Prediction of Isotopic Diffusion Coefficients for Cadmium in Dilute Solutions of Cadmium Iodide
(Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1978, 74 (1), 1978) Paterson, Lutfullah Russell
A method for predicting isotopic diffusion coefficients for component ions in a self-complexed electrolyte has been developed. In an irreversible thermodynamic analysis the diffusion coefficient has been shown to be a function of the mobility coefficients of the free ion and its complexes together with the interionic coupling coefficients between labelled and unlabelled species. It is shown that these coefficients may be evaluated by an extension of the methods developed earlier to predict isothermal transport in such systems. Cadmium ion diffusion coefficients in aqueous cadmium iodide, Daa, have been predicted (0.003–0.10 mol dm–3). These describe the maximum anticipated experimentally. Observed and calculated Daa agree to within 3 % at 0.1 mol dm–3.