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  • 1
    Electronic Resource
    Electronic Resource
    Ionic interactions in the system HBr + BaBr2 + H2O at 25°C (1979)
    Springer
    Journal of solution chemistry 8 (1979), S. 277-282 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficients ; hydrobromic acid ; barium bromide ; mixed electrolytes ; Pitzer's equations ; Scatchard's equations ; ionic interactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Electromotive-force measurements are reported for mixtures of HBr and BaBr2 in water at 25°C at constant total ionic strengths. Activity coefficients for HBr were analyzed using Pitzer's equations and Scatchard's neutral-electrolyte treatment. Both methods gave comparable results if the effects of higher-order electrostatic terms on the H+−Ba+2 interactions were included in Pitzer's treatment. Furthermore, the value of the H+−Ba+2 interaction parameter, θ(s), which should be independent of the anion, is indeed close to that for binary mixtures of these ions having chloride as common ion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650745
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    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
    Keywords: Activity coefficient ; total molal quantities ; mixed electrolytes ; ionic interactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647739
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Activity coefficients for the system HBr+SrBr2+H2O at 25° (1980)
    Springer
    Journal of solution chemistry 9 (1980), S. 785-789 
    Details
    ISSN: 1572-8927
    Keywords: Mean ionic activity coefficients ; e.m.f. ; HBr ; SrBr2 ; H2O ; ionic interactions ; Pitzer equations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Mean ionic activity coefficients at 25°C for HBr and SrBr2 in the system HBr + SrBr2 + H2O at constant total ionic strengths of 0.1–2 mol-kg−1 have been obtained by e.m.f. measurements. The results support previous findings1,2) that Pitzer's treatment of asymmetric mixtures of this type allowing for higher order electrostatic interactions between ions of the same charge sign is precise. For the HX+NX2+H2O systems the Pitzer interaction parameter ΨHNX can be conveniently set to zero without loss in accuracy in the description of the experimental results. With the exception of Mn2+, values of θHN (s), the Pitzer parameter governing short-range interactions between H+ and N2+ ions, vary only slightly with the Pauling ionic crystal radii of the different cations (N=Mg, Ca, Sr, Ba, Ni and Co).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00646797
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    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
    Keywords: Mixed electrolytes ; mixed solvents ; Harned's method ; ion-ion interactions ; ion-solvent interactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00662895
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    Paper (German National Licenses)
    Fulltext
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