Conductivity studies of dilute aqueous solutions of oxalic acid and neutral oxalates of sodium, potassium, cesium, and ammonium from 5 to 35°C

M. Bešter-Rogač, M. Tomšič, J. Barthel, R. Neueder, A. Apelblat

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20 Scopus citations

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 × 10-3 mol-dm -3, from 5 to 35°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-Hückel equation for activity coefficients, to give the limiting equivalent conductances of bioxalate anion λ (HC2O4 -) and oxalate anion λ(1/2C 2O42-) and the corresponding dissociation constants K1 and K2.

Original languageEnglish
Pages (from-to)1-18
Number of pages18
JournalJournal of Solution Chemistry
Volume31
Issue number1
DOIs
StatePublished - 1 Dec 2002

Keywords

  • Alkali metal oxalates
  • Ammonium oxalate
  • Aqueous solutions
  • Electrolyte conductivity
  • Electrolyte solutions
  • Ion conductivities
  • Oxalic acid

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