Abstract
Conductivity measurements of oxalic acid and neutral oxalates (disodium oxalate, dipotassium oxalate, dicesium, and diammonium oxalate) were performed on dilute aqueous solutions, c < 3 x 10(-3) mol-dm(-3), from 5 to 35&DEG;C, These-data and those available from the literature were analyzed in terms of dissociation steps of oxalic acid, the Onsager conductivity equation for neutral oxalates, the ...
Abstract
Conductivity measurements of oxalic acid and neutral oxalates (disodium oxalate, dipotassium oxalate, dicesium, and diammonium oxalate) were performed on dilute aqueous solutions, c < 3 x 10(-3) mol-dm(-3), from 5 to 35&DEG;C, These-data and those available from the literature were analyzed in terms of dissociation steps of oxalic acid, the Onsager conductivity equation for neutral oxalates, the Quint-Viallard conductivity equation for the acid, and the Debye-Huckel equation for activity coefficients, to give the limiting equivalent conductances of bioxalate anion λ(&INFIN;)(HC2O4-) and oxalate anion lambda(infinity)(1/2C(2)O(4)(2-)) and the corresponding dissociation constants K-1 and K-2.
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