Mixed salt solutions

Horita I, Cole D. R., and Wesolowski D. I (1993b). The activity-composition relationship of oxygen and hydrogen isotopes in aqueous salt solutions, II Vapor-liquid water equilibration of mixed salt solutions from 50 to 100°C and geochemical implications. Geochim. Cosmochim. Acta, 57 4703-4711. 

DECANTATION—LET DIRT-MIXED SALT SOLUTION STAND UNTIL MOST OF THE DIRT HAS SETTLED. THEN POUR OFF THE LIQUID. THIS PROCESS IS CALLED "DECANTATION."... 

Eqs. 2.76, 2.80, and 2.81 ignore volumetric ternary interaction terms (6>E, Yjk) that could P y important roles in mixed salt solutions (Monnin 1989 ... 

Considerable information concerning structural effects on aqueous salt solutions has been provided by studies of the properties of mixed solutions (Anderson and Wood, 1973). In a mixed salt solution prepared by mixing YAm moles of a salt MX (molality m) with Yhm moles of a salt NX (molality m) to yield m moles of mixture in 1 kg of solvent, if W is the weight of solvent, the excess Gibbs function of mixing Am GE is given by (19) where GE is the excess function for... 

McNeal, B. L., D. A. Layfield, W. A. Norvell, and J. D. Rhoades. 1968. Factors influencing hydraulic conductivity of soils in the presence of mixed salt solutions. Soil Sci Soc. Am. Proc. 32 187-290. 

Solution 0.1N mixed salt solution of chlorides. In case of Ag+, nitrates was used instead. 

Solubility of Carbon Dioxide in Aqueous Mixed-Salt Solutions... 

T he solubility data of gases in aqueous mixed-salt solutions are funda-mentally important in research on liquid-gas mass transfer and in designing gas-liquid contacting operations, especially gas absorption accompanied by chemical reaction. 

The data have, however, been obtained for only a few systems by Onda et al. (J), Joosten and Danckwerts (2), and Hikita et al. (3). These authors also proposed methods for estimating the solubility of gases in aqueous mixed-salt solutions from the corresponding data for each salt in the systems. These studies are extensions of the empirical method proposed by van Krevelen and Hoftijzer (4) on the basis of the following modified Setschenow Equation. 

In the present investigation, the solubilities of carbon dioxide in aqueous mixed-salt solutions were measured at 25°C and 1 atm partial pressure of carbon dioxide, and the possibility of a method for estimating the solubility was discussed. 

The vapor pressure of the mixed salt solution was estimated by the method of Robinson and Bower (11) from the corresponding data for each component salt solution. 

Table I. Experimental Results of Carbon Dioxide Solubility in Aqueous Binary Mixed-Salt Solutions at 25°C and 1 atm...

In this study, Equation 2 was also used to correlate the solubility data of carbon dioxide in aqueous mixed-salt solutions. The values of A and B, obtained by the least squares method for all the systems, are summarized in Tables V, VI, VII, and VIII. 

In this study, the following equations were developed from Equation 2 to estimate the solubility of carbon dioxide in aqueous mixed-salt solutions from the solubility data in an aqueous solution of each salt component... 

The solubilities of carbon dioxide in aqueous solutions of seven binary and three ternary mixed salts chosen from eight kinds of electrolytes were measured at 25°C and 1 atm partial pressure of carbon dioxide by the saturation method. The experimental results were not correlated easily by the modified Setschenow equation, but they were correlated very well by the empirical two-parameter equation. The parameters in the equation for the binary and ternary solutions could be estimated by assuming an additive rule for the parameters of the component salt systems. This method, therefore, is useful for predicting the solubility of carbon dioxide in aqueous mixed-salt solutions. 

D Ans and ToUert represented the specific heat of a mixed salt solution of molality M (mols per 1000 g. H2O) by the empirical formula ... 

We will suppose the mixed salt solution produced from the four solutions of the salts Z Mj, Z Mg, Z2M2, ZgMj, in such quantity and dilution that no displacement of equilibrium occurs when they are mixed. For this, the first condition is that the volumes a, 6, c, d must be chosen so that ac = bd, which is the case in Fig. 48, since a = op xoq, c = orxos, b = oqxor, d = opxos. 

Ba (Dove and Nix, 1997). Rate enhancements in single salt solutions can be predicted by equations that follow the form of Langmuir-type isotherms, whereas in mixed salt solutions, behavior follows a competitive cation-surface interaction model (Dove, 1999). Dove and co-workers argue that the alkali and alkaline earth cations enhance dissolution by modifying characteristics of the solvent at the mineral-solution interface. 

Higa M, Tanioka A, Kira A. A novel measurement method of Donnan potential at an interface between a charged membrane and mixed salt solution. J Membr Sci 1998 140 213-221. 

Values for yA B cannot be determined but T is accessible from the mean stoichiometric activity coefficients in mixed salt solutions via equation (8) thus ... 

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