Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K
The densities of aqueous solutions resulting from the partial neutralization of boric acid with sodium hydroxide were measured as a function of concentration, between 375 K and 523 K at pressures close to saturation. The speciation in this system is complex, di-and triborate ions are present in addi...
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Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00959782_v25_n4_p391_Ganopolsky |
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todo:paper_00959782_v25_n4_p391_Ganopolsky2023-10-03T14:56:42Z Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K Ganopolsky, J.G. Bianchi, H.L. Corti, H.R. Boric acid-sodium borate mixtures Densities High temperature Partial molar volumes Polyborates The densities of aqueous solutions resulting from the partial neutralization of boric acid with sodium hydroxide were measured as a function of concentration, between 375 K and 523 K at pressures close to saturation. The speciation in this system is complex, di-and triborate ions are present in addition to the monoborate ion. The concentration dependence of the apparent partial molar volume of the mixture can be described using the Pitzer equation only if the formation of the polyborate species in the concentrated solutions is taken into account. The partial molar volumes at infinite dilution for the diborate and triborate anions, obtained by assuming ideal mixing, are reported in the range of temperature studied. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00959782_v25_n4_p391_Ganopolsky |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Boric acid-sodium borate mixtures Densities High temperature Partial molar volumes Polyborates |
spellingShingle |
Boric acid-sodium borate mixtures Densities High temperature Partial molar volumes Polyborates Ganopolsky, J.G. Bianchi, H.L. Corti, H.R. Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K |
topic_facet |
Boric acid-sodium borate mixtures Densities High temperature Partial molar volumes Polyborates |
description |
The densities of aqueous solutions resulting from the partial neutralization of boric acid with sodium hydroxide were measured as a function of concentration, between 375 K and 523 K at pressures close to saturation. The speciation in this system is complex, di-and triborate ions are present in addition to the monoborate ion. The concentration dependence of the apparent partial molar volume of the mixture can be described using the Pitzer equation only if the formation of the polyborate species in the concentrated solutions is taken into account. The partial molar volumes at infinite dilution for the diborate and triborate anions, obtained by assuming ideal mixing, are reported in the range of temperature studied. |
format |
JOUR |
author |
Ganopolsky, J.G. Bianchi, H.L. Corti, H.R. |
author_facet |
Ganopolsky, J.G. Bianchi, H.L. Corti, H.R. |
author_sort |
Ganopolsky, J.G. |
title |
Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K |
title_short |
Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K |
title_full |
Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K |
title_fullStr |
Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K |
title_full_unstemmed |
Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K |
title_sort |
volumetric properties of aqueous electrolytes at high temperature. iii. b(oh)3-nabx(oh)3x+1-naoh mixtures up to 523 k |
url |
http://hdl.handle.net/20.500.12110/paper_00959782_v25_n4_p391_Ganopolsky |
work_keys_str_mv |
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1782029784020156416 |