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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Detalles Bibliográficos
Publicado: 1996
Materias:
Boric acid-sodium borate mixtures
Densities
High temperature
Partial molar volumes
Polyborates
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00959782_v25_n4_p391_Ganopolsky
http://hdl.handle.net/20.500.12110/paper_00959782_v25_n4_p391_Ganopolsky
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00959782_v25_n4_p391_Ganopolsky
record_format dspace
spelling paper:paper_00959782_v25_n4_p391_Ganopolsky2023-06-08T15:09:43Z Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K 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. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00959782_v25_n4_p391_Ganopolsky 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
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.
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
publishDate 1996
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00959782_v25_n4_p391_Ganopolsky
http://hdl.handle.net/20.500.12110/paper_00959782_v25_n4_p391_Ganopolsky
_version_ 1768543173383028736

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