Salting coefficients

Masterton, W.L. Lee, T.P. "Salting Coefficients from Scaled Particle Theory," J. Phys. Chem., 1970, 74, 1776-80. 

This coefficient is always positive. The relations between the neutral salt coefficients, the single ion coefficients, and the number of RNA negative charges are illustrated by the histograms and equations in Fig. 21.3B. The neutral salt coefficient rMgci2 is identical to T2+, which becomes important in the interpretation oflinkage expressions (Section 3.2). Another important relation is the condition for electroneutrality, which is now... 

As a concluding remark it is pertinent to observe that proving a theory requires several physical quantities that cannot unambiguously be determined simple and accurate prediction of salting coefficients should spur further theoretical development because their predictions are only fairly accurate. It is, however, clear that the logarithm of the activity coefficients of solutes in electrolyte solutions contains a term linear in the electrolyte concentration for a single electrolyte, a mixture of two electrolytes, and a non electrolyte. Equations 2.8,2.9, and 2.10, respectively, sanction the quantitative relationships. 

According to (2-29) the logarithm of the activity coefficient should be proportional to the ionic strength. The proportionality constant k is positive if the solute has a lower dielectric constant than the solvent, as is usually the case for aqueous solutions. As a first approximation an equation of this form is valid for many solutes up to ionic strengths of the order of unity. The quantity k, called the salting coefficient, depends on the nature of the solute and of the electrolyte and usually has a value of 0.01 to 0.10. 

S - is the solubility of the gas in a salt solution k - is the salt coefficient, constant for a given salt c - is the salt concentration... 

Masterson, W.L.. "Salting coefficients for gases in seawater from scaled-particle theory". J. Sol. Chem.. v4, 6, pp523-534 (1975)... 

Masterton WL, Lee TP (1970) Salting coefficients from scaled particle theory. J Phys Chem 74 1776... 

FIGURE 7.6 Predicted salting coefficients of various solutes by aqueous sodium chloride according to Equation 7.42 (----) plotted against the experimental values [67] ( ) and the dif-... 

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