Estimation of activity and osmotic coefficients of strong electrolytes in water at elevated temperatures

Alexander Apelblat; John L. Oscarson; James J. Christensen; Reed M. Izatt

doi:10.1007/BF00646429

Estimation of activity and osmotic coefficients of strong electrolytes in water at elevated temperatures

Alexander Apelblat, John L. Oscarson, James J. Christensen, Reed M. Izatt

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

10 Scopus citations

Abstract

It was found over a wide concentration and temperature range that differences between osmotic coefficients of a given electrolyte and a standard electrolyte, φ - φ^st, can be approximated by a linear relation. Sodium chloride, calcium chloride and sodium sulfate were chosen as standard electrolytes for 1:1, 2:1 and 1:2 electrolytes, respectively. Special numerical procedures were developed for the prediction and estimation of activity and osmotic coefficients at elevated temperatures based on data at two temperatures or on data at room temperature only. Reasonable agreement was found between activity coefficients estimated by the present procedure and those correlated by Pitzer's and Meissner's equations.

Original language	English
Pages (from-to)	95-108
Number of pages	14
Journal	Journal of Solution Chemistry
Volume	17
Issue number	2
DOIs	https://doi.org/10.1007/BF00646429
State	Published - 1 Feb 1988
Externally published	Yes

Keywords

Activity coefficients
aqueous electrolytes
elevated temperatures
osmotic coefficients

ASJC Scopus subject areas

Biophysics
Biochemistry
Molecular Biology
Physical and Theoretical Chemistry

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title = "Estimation of activity and osmotic coefficients of strong electrolytes in water at elevated temperatures",

abstract = "It was found over a wide concentration and temperature range that differences between osmotic coefficients of a given electrolyte and a standard electrolyte, φ - φst, can be approximated by a linear relation. Sodium chloride, calcium chloride and sodium sulfate were chosen as standard electrolytes for 1:1, 2:1 and 1:2 electrolytes, respectively. Special numerical procedures were developed for the prediction and estimation of activity and osmotic coefficients at elevated temperatures based on data at two temperatures or on data at room temperature only. Reasonable agreement was found between activity coefficients estimated by the present procedure and those correlated by Pitzer's and Meissner's equations.",

keywords = "Activity coefficients, aqueous electrolytes, elevated temperatures, osmotic coefficients",

author = "Alexander Apelblat and Oscarson, {John L.} and Christensen, {James J.} and Izatt, {Reed M.}",

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T1 - Estimation of activity and osmotic coefficients of strong electrolytes in water at elevated temperatures

AU - Apelblat, Alexander

AU - Oscarson, John L.

AU - Christensen, James J.

AU - Izatt, Reed M.

PY - 1988/2/1

Y1 - 1988/2/1

N2 - It was found over a wide concentration and temperature range that differences between osmotic coefficients of a given electrolyte and a standard electrolyte, φ - φst, can be approximated by a linear relation. Sodium chloride, calcium chloride and sodium sulfate were chosen as standard electrolytes for 1:1, 2:1 and 1:2 electrolytes, respectively. Special numerical procedures were developed for the prediction and estimation of activity and osmotic coefficients at elevated temperatures based on data at two temperatures or on data at room temperature only. Reasonable agreement was found between activity coefficients estimated by the present procedure and those correlated by Pitzer's and Meissner's equations.

AB - It was found over a wide concentration and temperature range that differences between osmotic coefficients of a given electrolyte and a standard electrolyte, φ - φst, can be approximated by a linear relation. Sodium chloride, calcium chloride and sodium sulfate were chosen as standard electrolytes for 1:1, 2:1 and 1:2 electrolytes, respectively. Special numerical procedures were developed for the prediction and estimation of activity and osmotic coefficients at elevated temperatures based on data at two temperatures or on data at room temperature only. Reasonable agreement was found between activity coefficients estimated by the present procedure and those correlated by Pitzer's and Meissner's equations.

KW - Activity coefficients

KW - aqueous electrolytes

KW - elevated temperatures

KW - osmotic coefficients

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U2 - 10.1007/BF00646429

DO - 10.1007/BF00646429

M3 - Article

AN - SCOPUS:0041628486

SN - 0095-9782

VL - 17

SP - 95

EP - 108

JO - Journal of Solution Chemistry

JF - Journal of Solution Chemistry

IS - 2

ER -

Estimation of activity and osmotic coefficients of strong electrolytes in water at elevated temperatures

Abstract

Keywords

ASJC Scopus subject areas

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