Sit Parameters for 1:2 Electrolytes and Correlation with Pitzer Coefficients

Abstract

Summary -The empirical parameters of a two-parameter SIT equation were determined for some 1:2 electrolytes: chlorides, bromides, iodides, nitrates, perchlorates of alkali earth metals and sulfates of alkali metals. A wide range of ionic strengths (0 < I ≤ 18 mol kg -1 ) and t = 25 °C was considered. Canonical correlation analysis showed quite significant correlations between SIT and Pitzer interaction coefficients for different classes of 1:2 type electrolytes.

The inorganic speciation of tin(II) in aqueous solution

“…Bretti et al (2006). e Taken from Crea et al (2007). f ((À0.0026 + 0.00115 * I)+(À0.2833À(À0.0026 + 0.00115 * I))/(I + 1)), taken from Crea et al (2006a).…”

Dissociation Constants of Protonated Oxidized Glutathione in Seawater Media at Different Salinities

“…In the classic SIT approach, e parameters are true constants, but recently, a modified version of the SIT equation was used (Bretti et al 2004(Bretti et al , 2006Crea et al 2007a), in which interaction coefficients e are not constant, but depend on ionic strength according to the simple relationship: Table 3. De calculated by the linear equation of the classical SIT model are reported, as an example, in Table 3 too.…”

“…The Pitzer coefficients for the various GSSG species are also tabulated in Table 7 (Crea et al 2007a). They can be used to calculate the activity coefficients of the GSSG species using the equations …”

“…(Martell et al 2004), with stabilities ranging (in terms of log formation constants for the specie 1:1 metal to ligand, at I = 0.1 mol L -1 and t = 25°C) from 6.2 for Cadmium(II) to 13.8 for Copper(II). To understand such interactions, one needs to know acid-base chemistry of GSH and GSSG (Crea et al 2007a(Crea et al , 2008a. The protonation constants (K H i ) of multidentate ligands of GSH and GSSG determine particular chemical environment of these molecules to interact with metals.…”

Chemical Thermodynamics and Calculation of Parameters of Ionic Equilibria of Indium(III) in Perchlorate, Chloride and Sulphate Aqueous Solutions

“…Обзор базовых коэффициентов специфического взаимодействия [27,[53][54][55] (моляльная шкала (кг/моль), 25 о С, 1 атм)…”