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
VL - 39
SP - 1632
EP - 1636
JO - Journal of Chemical Thermodynamics
JF - Journal of Chemical Thermodynamics
SN - 0021-9614
IS - 12
ER -