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  • 1
    Electronic Resource
    Electronic Resource
    Activity Coefficients for the System HCl +GaCl3 + H2O from 5 to 55°C (1999)
    Springer
    Journal of solution chemistry 28 (1999), S. 933-947 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficient ; emf ; Harned's equations ; hydrochloric acid ; gallium chloride ; electrolyte mixtures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Activity coefficients for HCl in HCl + GaCl3 + H2O at eleven different temperatures from 5 to 55°C have been determined at total experimental ionic strengths from 0.01 to 3.0 mol-kg−1 using a cell of the type: Pt; H2(g, 1 atm)|HCl (mA) + GaCl3(mB)|AgCl, Ag(A) The results for the 770 experimental emf data points have been used to determine the variation of the activity coefficients of HCl with the change in molality of GaCl3 in the solution. It is found that the linear form of Harned's rule is not obeyed for this system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021740416488
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  • 2
    Electronic Resource
    Electronic Resource
    Thermodynamics of the GaCl3-HCl-H2O System at 25°C (2000)
    Springer
    Journal of solution chemistry 29 (2000), S. 289-297 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficient ; emf ; hydrochloric acid ; gallium chloride ; Pitzer equations ; hydrolysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A comprehensive equation for the thermodynamic properties of the systemGaCl3-HCl-H2O at 25°C in the ion-interaction (Pitzer) equation form has been generatedon the basis of a recent and comprehensive array of electrochemical cellmeasurements of the HCl activity at total stoichiometric ionic strengths from 0.01 to 3.0mol-kg−1. Alternate equations with and without explicit consideration of thehydrolyzed product GaOH2+ as a separate species have been tested. Excellentagreement is obtained between the calculated and measured cell potentials forthe formulation, which includes GaOH2+ as an additional species. The effect offurther hydrolysis as well as that of complex formation has been found to benegligible. While a satisfactory set of Pitzer parameters has been found, it wasnot possible to obtain a unique thermodynamic representation for this systembecause of large uncertainties in the first hydrolysis constant of Ga(III) and becauseof redundancies and intrinsic correlations between some of the Pitzer parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005154501655
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    Paper (German National Licenses)
    Fulltext
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