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  • 1
    Digitale Medien
    Digitale Medien
    Electromotive-force studies of mixed electrolytes in mixed solvents. HCl+NH4Cl in methanol+water solvents at 25°C (1978)
    Springer
    Journal of solution chemistry 7 (1978), S. 349-355 
    Details
    ISSN: 1572-8927
    Schlagwort(e): Mixed electrolytes ; mixed solvents ; Harned's method ; ion-ion interactions ; ion-solvent interactions
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Electromotive-force measurements of the cell Pt, H2(g, 1 atm)|HCl(m1), NH4Cl(m2), methanol(X%), Water(100−X)%|AgCl|Ag have been made at 25°C for m1+m2=1 mole-kg−1 and X=0, 10, 20, 30, 40, and 50% methanol by weight. Hydrochloric acid obeys Harned's rule in aqueous solutions, but a quadratic term is required in the mixed solvents. The Harned coefficients for the acid vary with solvent composition, and this invalidates the applicability of Harned's method for estimating activity coefficients for single electrolytes in mixed solvents. This method is described and the reason for the inapplicability of the method is discussed in terms of ion-ion and ion-solvent interactions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00662895
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  • 2
    Digitale Medien
    Digitale Medien
    All mixing coefficients and consistency test calculations for binary mixed electrolytes (1987)
    Springer
    Journal of solution chemistry 16 (1987), S. 917-926 
    Details
    ISSN: 1572-8927
    Schlagwort(e): Activity coefficients ; binary mixed electrolytes ; HCl ; KCl
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Two new methods are reported from which the mixing activity coefficients of both electrolytes in a binary mixture can be computed simultaneously from fitting the activity coefficients of one of the electrolytes only and without using the derivatives of the parameters. Furthermore, variations caused by changing the fractional ionic strengths at fixed total ionic strength entails no assumptions about the ionic strength dependence of the mixing coefficients. The methods are shown to be superior to other methods. The results for the system HCl+KCl at 25°C are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00650995
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