The ion-pair association constant of oxalate with fac-tris(2-aminomethylpyridine)cobalt(III)

Azzellini, Maria Amélia de Almeida; Oliveira, Maria de Fátima Paredes de; Iha, Neyde Yukie Murakami; Osorio, Viktoria Klara Lakatos

doi:10.1016/0277-5387(96)00155-6

Cited by 8 publications

(1 citation statement)

References 34 publications

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“…As we know, ion association has an important role in chemical, biological and agricultural systems like colloids, proteins, soils, corrosion and lithium batteries. So, the ion association has been investigated widely experimentally and theoretically [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. When two ions of opposite charges approach enough each others an ion-pair species may be formed due to the coulombic attraction.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Investigation of NaClO3 Solubility in the Mixed Solvent Medium and the Related Ion – Pair Formation at Different Temperatures

Aghaie,

Kishani

2015

J. Appl. Sol. Chem. Model.

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Using the evaporating method, the solubility of sodium chlorate was determined in the various mixed solvents (water + ethanol + propanol) at various temperatures. The results showed that the solubility of NaClO3 decreases with increasing the mass percent of ethanol and propanol. On the other hand, the solubility of NaClO3 increases with increasing the temperature. In addition, the equilibrium constant of ion pair formation, KIP, for the reaction Na+(aq) + ClO3-(aq) -->Na+ClO3- (Ion Pair) was estimated upon Fuoss contact ion pair model and then, the values of ion-pair concentrations were determined by using the extended Debye-Hückel model and iteration calculations in various mixed solvents and various temperatures . Finally the value of thermodynamic solubility product constant, Ksp(th), and the values ∆H°, ∆S° and ∆G° of ion-pair formation were estimated in the mixed solvent media.

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