ISSN:
1572-8927
Keywords:
Thermal diffusion
;
Soret effect
;
Soret coefficient
;
complex ions
;
entropy of transport
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The Soret effect in dilute aqueous solutions (0.01–0.1m) of Na2MgEDTA and Na2CaEDTA is investigated using the flow-cell method. The Soret coefficients obtained from thermal diffusion experiments conducted at 25°C are reported. Heats of transport have been estimated based on the Debye-Hückel theory and the molar entropies of transport, calculated. Results of the present work have been compared with the Soret data for MgCl2 and CaCl2. It is suggested that the solvent exchange effect may account for the differences in the Soret effect observed between the pairs (Mg+2, Ca+2) and (MgEDTA−2, CaEDTA−2).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00651856
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