Abstract
The specific conductance of Thiamine hydrochloride in water and water-ethanol mixtures was measured at different temperatures 283, 293, 303 and 313 K. Kraus-Bray and Shedlovsky models of conductivity were used for analyzing conductance data. The limiting molar conductance, association constant K a, energy of activation of the rate process E a, and related thermodynamic parameters have been determined. Based on viscosity of the solvent, Walden product and Stokes molecular radius were also been determined. Born model of ion solvation was proved. Standard thermodynamic parameters of association (G a, H a and S a) were calculated and discussed. The results show the decrease in limiting molar conductance and increase in K a with decrease in relative permittivity. Such computed values have been used to discuss the solvation behaviour of Thiamine hydrochloride in water-ethanol mixtures.
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Published in Russian in Elektrokhimiya, 2012, Vol. 48, No. 5, pp. 544–550.
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Bhat, J.I., Shetty, M.K. Studies on the effect of ethanol on the solvation behaviour of thiamine hydrochloride in water. Russ J Electrochem 48, 495–501 (2012). https://doi.org/10.1134/S1023193512050047
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DOI: https://doi.org/10.1134/S1023193512050047