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Thermodynamic characteristics of complexation between Ho3+ and ethylenediamine-N,N'-disuccinic acid in aqueous solutions at 298.15 K

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Abstract

The thermodynamic characteristics of complexation between ethylenediamine-N,N'-disuccinic acid (H4Y; EDDA) and Ho3+ ion were determined calorimetrically and potentiometrically at 298.15 K and ionic strengths of 0.1, 0.5, 1.0, and 1.5 (KNO3). The logK, Δr G, Δr H, and Δr S values for the formation of HoY and HOHY complexes were calculated at the studied and zero ionic strength values. The changes in thermodynamic parameters of the reactions are discussed.

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Correspondence to A. I. Lytkin.

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Original Russian Text © A.I. Lytkin, N.V. Chernyavskaya, A.S. Chernov, V.E. Litvinenko, 2016, published in Zhurnal Neorganicheskoi Khimii, 2016, Vol. 61, No. 4, pp. 549–554.

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Lytkin, A.I., Chernyavskaya, N.V., Chernov, A.S. et al. Thermodynamic characteristics of complexation between Ho3+ and ethylenediamine-N,N'-disuccinic acid in aqueous solutions at 298.15 K. Russ. J. Inorg. Chem. 61, 526–530 (2016). https://doi.org/10.1134/S0036023616040124

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  • DOI: https://doi.org/10.1134/S0036023616040124

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