Measurement and Modeling of Mean Activity Coefficients of NaCl in an Aqueous Mixed Electrolyte Solution Containing Glycine

An electrochemical cell with two ion-selective electrodes (Na + glass) and (Cl - solid state) was used to measure the mean ionic activity coefficient of NaCl in an aqueous mixture containing NaCl, glycine, and NaNO 3 at 308.15 K. The experiments were conducted at fixed molality of NaNO 3 (0.1 m) and...

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Bibliographic Details
Published inInternational journal of thermophysics Vol. 37; no. 8; pp. 1 - 11
Main Authors Sheikholeslami, Paniz, Dehghani, M. R., Safahieh, Tina
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2016
Subjects
Activity coefficients
Classical Mechanics
Concentration (composition)
Condensed Matter Physics
Electrodes
Glycine
Industrial Chemistry/Chemical Engineering
Mathematical analysis
Mathematical models
Nanostructure
Physical Chemistry
Physics
Physics and Astronomy
Activity coefficient
Amino acids
Ion-selective electrodes
Modified Pitzer equation
Mixed electrolyte solutions
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Summary:An electrochemical cell with two ion-selective electrodes (Na + glass) and (Cl - solid state) was used to measure the mean ionic activity coefficient of NaCl in an aqueous mixture containing NaCl, glycine, and NaNO 3 at 308.15 K. The experiments were conducted at fixed molality of NaNO 3 (0.1 m) and various molalities of glycine (0–1 m) and NaCl (up to 0.8 m). The experimental data were modeled using a modified version of the Pitzer equation. Finally the activity coefficient ratio of glycine was determined based on the Maxwell equation.
Bibliography:ObjectType-Article-1
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ISSN:0195-928X
1572-9567
DOI:10.1007/s10765-016-2088-3