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Abstract:

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.

Registro:

Documento: Artículo
Título:Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K
Autor:Ganopolsky, J.G.; Bianchi, H.L.; Corti, H.R.
Filiación:Departamento de Química, Comision Nac. de Energia Atomica, Av. Libertador 8250, 1429 Buenos Aires, Argentina
Inst. Quimica Fisica de Materiales, Medio Ambiente y Energía, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:Boric acid-sodium borate mixtures; Densities; High temperature; Partial molar volumes; Polyborates
Año:1996
Volumen:25
Número:4
Página de inicio:391
Página de fin:399
DOI: http://dx.doi.org/10.1007/BF00972894
Título revista:Journal of Solution Chemistry
Título revista abreviado:J. Solut. Chem.
ISSN:00959782
CODEN:JSLCA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00959782_v25_n4_p391_Ganopolsky

Referencias:

  • Ganopolsky, J.G., Blanchi, H.L., Corti, H.R., (1996) J. Solution Chem., 25, p. 377
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Citas:

---------- APA ----------
Ganopolsky, J.G., Bianchi, H.L. & Corti, H.R. (1996) . Volumetric properties of aqueous electrolytes at high temperature. III. B(OH)3-NaBx(OH)3x+1-NaOH mixtures up to 523 K. Journal of Solution Chemistry, 25(4), 391-399.
http://dx.doi.org/10.1007/BF00972894
---------- CHICAGO ----------
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" . Journal of Solution Chemistry 25, no. 4 (1996) : 391-399.
http://dx.doi.org/10.1007/BF00972894
---------- MLA ----------
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" . Journal of Solution Chemistry, vol. 25, no. 4, 1996, pp. 391-399.
http://dx.doi.org/10.1007/BF00972894
---------- VANCOUVER ----------
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. J. Solut. Chem. 1996;25(4):391-399.
http://dx.doi.org/10.1007/BF00972894