Activity coefficients of NaBF4 in aqueous solution

Héctor R. Galleguillos; Felipe Hernández-Luis; Teófilo A. Graber; Jaime W. Morales

doi:10.1016/j.jct.2007.04.007

Activity coefficients of NaBF₄ in aqueous solution

Héctor R. Galleguillos, Felipe Hernández-Luis, Teófilo A. Graber, Jaime W. Morales

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

8 Scopus citations

Abstract

The activity coefficients of NaBF₄ in water were experimentally determined at 288.15, 298.15, and 308.15 K from emf measurements of the following electrochemical cell without transference containing two ion selective electrodes (ISE):Na-ISE | NaBF₄ (m) | BF₄ -ISEThe molality m varied between ca. 0.1 and 9 mol · kg^-1. The Hitchcock method of extrapolation and the models of Pitzer and Scatchard were used to obtain the mean ionic activity coefficients from measurements of electromotive force (emf). The electrode system employed demonstrated good Nerstian behaviour. The activity and osmotic coefficients were calculated using the Pitzer parameters obtained in this study, and were contrasted with those from the literature which had been determined only at 298.15 K. Finally, these activity coefficients are discussed together with other sodium salts.

Original language	English
Pages (from-to)	1632-1636
Number of pages	5
Journal	Journal of Chemical Thermodynamics
Volume	39
Issue number	12
DOIs	https://doi.org/10.1016/j.jct.2007.04.007
State	Published - Dec 2007
Externally published	Yes

Keywords

Activity coefficients
Emf
NaBF
Thermodynamics
Water

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10.1016/j.jct.2007.04.007

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@article{775b5c28b0894bd38c09c11b331ea8b1,

title = "Activity coefficients of NaBF4 in aqueous solution",

abstract = "The activity coefficients of NaBF4 in water were experimentally determined at 288.15, 298.15, and 308.15 K from emf measurements of the following electrochemical cell without transference containing two ion selective electrodes (ISE):Na-ISE | NaBF4 (m) | BF4 -ISEThe molality m varied between ca. 0.1 and 9 mol · kg-1. The Hitchcock method of extrapolation and the models of Pitzer and Scatchard were used to obtain the mean ionic activity coefficients from measurements of electromotive force (emf). The electrode system employed demonstrated good Nerstian behaviour. The activity and osmotic coefficients were calculated using the Pitzer parameters obtained in this study, and were contrasted with those from the literature which had been determined only at 298.15 K. Finally, these activity coefficients are discussed together with other sodium salts.",

keywords = "Activity coefficients, Emf, NaBF, Thermodynamics, Water",

author = "Galleguillos, {H{\'e}ctor R.} and Felipe Hern{\'a}ndez-Luis and Graber, {Te{\'o}filo A.} and Morales, {Jaime W.}",

note = "Funding Information: The authors thank CONICYT-Chile for financing this research through Fondecyt Project No. 1040299. Likewise to the ORI (Oficina Relaciones Internacionales) of La Laguna University.",

year = "2007",

month = dec,

doi = "10.1016/j.jct.2007.04.007",

language = "English",

volume = "39",

pages = "1632--1636",

journal = "Journal of Chemical Thermodynamics",

issn = "0021-9614",

publisher = "Academic Press Inc.",

number = "12",

}

TY - JOUR

T1 - Activity coefficients of NaBF4 in aqueous solution

AU - Galleguillos, Héctor R.

AU - Hernández-Luis, Felipe

AU - Graber, Teófilo A.

AU - Morales, Jaime W.

N1 - Funding Information: The authors thank CONICYT-Chile for financing this research through Fondecyt Project No. 1040299. Likewise to the ORI (Oficina Relaciones Internacionales) of La Laguna University.

PY - 2007/12

Y1 - 2007/12

N2 - The activity coefficients of NaBF4 in water were experimentally determined at 288.15, 298.15, and 308.15 K from emf measurements of the following electrochemical cell without transference containing two ion selective electrodes (ISE):Na-ISE | NaBF4 (m) | BF4 -ISEThe molality m varied between ca. 0.1 and 9 mol · kg-1. The Hitchcock method of extrapolation and the models of Pitzer and Scatchard were used to obtain the mean ionic activity coefficients from measurements of electromotive force (emf). The electrode system employed demonstrated good Nerstian behaviour. The activity and osmotic coefficients were calculated using the Pitzer parameters obtained in this study, and were contrasted with those from the literature which had been determined only at 298.15 K. Finally, these activity coefficients are discussed together with other sodium salts.

AB - The activity coefficients of NaBF4 in water were experimentally determined at 288.15, 298.15, and 308.15 K from emf measurements of the following electrochemical cell without transference containing two ion selective electrodes (ISE):Na-ISE | NaBF4 (m) | BF4 -ISEThe molality m varied between ca. 0.1 and 9 mol · kg-1. The Hitchcock method of extrapolation and the models of Pitzer and Scatchard were used to obtain the mean ionic activity coefficients from measurements of electromotive force (emf). The electrode system employed demonstrated good Nerstian behaviour. The activity and osmotic coefficients were calculated using the Pitzer parameters obtained in this study, and were contrasted with those from the literature which had been determined only at 298.15 K. Finally, these activity coefficients are discussed together with other sodium salts.

KW - Activity coefficients

KW - Emf

KW - NaBF

KW - Thermodynamics

KW - Water

UR - http://www.scopus.com/inward/record.url?scp=35848932074&partnerID=8YFLogxK

U2 - 10.1016/j.jct.2007.04.007

DO - 10.1016/j.jct.2007.04.007

M3 - Article

AN - SCOPUS:35848932074

SN - 0021-9614

VL - 39

SP - 1632

EP - 1636

JO - Journal of Chemical Thermodynamics

JF - Journal of Chemical Thermodynamics

IS - 12

ER -

Activity coefficients of NaBF₄ in aqueous solution

Abstract

Keywords

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