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

doi:10.1023/A:1014805417286

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

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

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 ₂O₄^2-) and the corresponding dissociation constants K₁ and K₂.

Original language	English
Pages (from-to)	1-18
Number of pages	18
Journal	Journal of Solution Chemistry
Volume	31
Issue number	1
DOIs	https://doi.org/10.1023/A:1014805417286
State	Published - 1 Dec 2002

Keywords

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

ASJC Scopus subject areas

Biophysics
Biochemistry
Molecular Biology
Physical and Theoretical Chemistry

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

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-H{\"u}ckel 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.",

keywords = "Alkali metal oxalates, Ammonium oxalate, Aqueous solutions, Electrolyte conductivity, Electrolyte solutions, Ion conductivities, Oxalic acid",

author = "M. Be{\v s}ter-Roga{\v c} and M. Tom{\v s}i{\v c} and J. Barthel and R. Neueder and A. Apelblat",

note = "Funding Information: This work was supported by the Ministry of Education, Science and Sport of Slovenia (no. 01030-P-506). The authors are grateful to Romana Cerc Korosˇec, dipl. chem., for thermogravimetric measurements.",

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doi = "10.1023/A:1014805417286",

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T1 - Conductivity studies of dilute aqueous solutions of oxalic acid and neutral oxalates of sodium, potassium, cesium, and ammonium from 5 to 35°C

AU - Bešter-Rogač, M.

AU - Tomšič, M.

AU - Barthel, J.

AU - Neueder, R.

AU - Apelblat, A.

N1 - Funding Information: This work was supported by the Ministry of Education, Science and Sport of Slovenia (no. 01030-P-506). The authors are grateful to Romana Cerc Korosˇec, dipl. chem., for thermogravimetric measurements.

PY - 2002/12/1

Y1 - 2002/12/1

N2 - 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.

AB - 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.

KW - Alkali metal oxalates

KW - Ammonium oxalate

KW - Aqueous solutions

KW - Electrolyte conductivity

KW - Electrolyte solutions

KW - Ion conductivities

KW - Oxalic acid

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DO - 10.1023/A:1014805417286

M3 - Article

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SN - 0095-9782

VL - 31

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JO - Journal of Solution Chemistry

JF - Journal of Solution Chemistry

IS - 1

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

Abstract

Keywords

ASJC Scopus subject areas

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