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  • Activity coefficient  (1)
  • Mixed electrolytes  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Activity coefficients of electrolytes in binary mixtures calculated using total molal quantities (1980)
    Springer
    Journal of solution chemistry 9 (1980), S. 507-515 
    Details
    ISSN: 1572-8927
    Schlagwort(e): Activity coefficient ; total molal quantities ; mixed electrolytes ; ionic interactions
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Activity coefficients in binary mixed electrolytes are expressed in terms of the parameters from total molal quantities. Two versions of the calculations are presented and compared with the methods of Pitzer and Scatchard. For each method interrelations among the various parameters are examined. The system being tested is HCl+CoCl2+H2O at 25°C, for which new experimental data at low ionic strengths are included.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00647739
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  • 2
    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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