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  • 1
    Electronic Resource
    Electronic Resource
    Solute activity coefficients in dilute aqueous electrolyte mixtures. III. The ternary system HClO4+UO2(ClO4)2+H2O at 25°C (1977)
    Springer
    Journal of solution chemistry 6 (1977), S. 747-756 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficients ; aqueous solutions ; mixed electrolyte solutions ; osmotic coefficients ; perchloric acid ; uranyl perchlorate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Isopiestic vapor pressure comparison measurements were conducted with the three-component system HClO4+UO2(ClO4)2+H2O in the concentration range between I=0.05 and 1.9m. Analysis of the mixture composition and concentration dependence of the osmotic coefficients with the Scatchard neutral-electrolyte and ion-component methods and with the Pitzer ioncomponent methods gave equally satisfactory results. Prediction of the observed osmotic coefficients by two-component approximations was satisfactory, and the data agreed well with values estimated with a model based on the osmolal fraction. A fair concordance was also found between predicted solute activity coefficients from simple models and values derived from complete treatments which included interaction terms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650451
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Osmotic and activity coefficients of aqueous NaTcO4 and NaReO4 solutions at 25°C (1978)
    Springer
    Journal of solution chemistry 7 (1978), S. 229-238 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficients ; aqueous solutions ; osmotic coefficients ; sodium pertechnetate ; sodium perrhenate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Isopiestic vapor-pressure comparison experiments were performed with aqueous binary sodium perchlorate, pertechnetate, and perrhenate solutions to concentrations of approximately 8.5 m. Osmotic coefficients for these solutions and mean molal ionic activity coefficients for NaTcO4 and NaReO4 were derived from the isotonic molalities. Pitzer's treatment was applied to describe the concentration dependence of the osmotic coefficients of NaClO4, NaTcO4, and NaReO4, and the implications of the parameters derived from a leastsquares fit are discussed in terms of solvent structure and interionic forces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644270
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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