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Mean activity coefficients of NaCl in (sodium chloride + sodium bicarbonate + water) fromT = (293.15 to 308.15) K
Nanjing University of Chemical Technology.
Nanjing University of Chemical Technology.
Nanjing University of Chemical Technology.
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2001 (English)In: Journal of Chemical Thermodynamics, ISSN 0021-9614, E-ISSN 1096-3626, Vol. 33, p. 1107-1119Article in journal (Refereed) Published
Abstract [en]

The mean activity coefficients of NaCl in (sodium chloride + sodium bicarbonate + water) were determined experimentally in the temperature range 293.15 K to 308.15 K at four NaHCO3 molality fractions (0.1, 0.3, 0.5, and 0.7). The measurements were made with an electrochemical cell, using a Na+ glass ion-selective electrode and a Cl- solid-state ion-selective electrode. The experimental values reported by Butler and Huston are found to be higher than those calculated from the Pitzer equation using the existing parameters while the experimental results of this work are close to the calculated values, up to an NaHCO3 molality fraction of 0.5. At the NaHCO3 molality fraction of 0.7, the experimental data are much lower than the calculated values, implying that the interference of HCO3- on the Na+ glass ion-selective electrode can only be neglected up to a molality fraction of NaHCO3 of 0.5, an observation which is consistent with that of Butler and Huston.

Place, publisher, year, edition, pages
2001. Vol. 33, p. 1107-1119
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-2934DOI: 10.1006/jcht.2000.0827ISI: 000173149400011Scopus ID: 2-s2.0-0035545237Local ID: 0abefcf0-0d7f-11de-9d3e-000ea68e967bOAI: oai:DiVA.org:ltu-2934DiVA, id: diva2:975788
Note
Uppr├Ąttat; 2001; 20090310 (xiajix)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2023-05-08Bibliographically approved

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Ji, Xiaoyan

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