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Activity Coefficients of CsCl in PEG 200–H2O and PEG 600–H2O Mixtures at 298.15 K
Activity Coefficients of CsCl in PEG 200–H2O and PEG 600–H2O Mixtures at 298.15 K
- Source :
- Journal of Chemical & Engineering Data. 62:2541-2548
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The mean activity coefficients of the ternary systems CsCl + polyethylene glycol (PEG) (w) + H2O (1 – w) (w = 10%, 20%, 30%, 40%) determined by the potentiometric method at T = 298.15 K are reported. The molecular weights of PEG are 200 and 600, and the CsCl molality varies from 0.01 to 4.00 mol/kg. To correlate the experimental data, the Pitzer equation, extended Debye–Huckel equation, and the modified Pitzer equation have been utilized herein. As a result, a series of thermodynamic parameters were obtained and discussed in detail, including the mean ionic activity coefficients (γ±), the osmotic coefficient (Φ), the excess Gibbs free energies (GE), the standard Gibbs free energy of transference (ΔGt0) and the primary hydration number (nhydr).
- Subjects :
- Activity coefficient
Molality
General Chemical Engineering
Thermodynamics
02 engineering and technology
General Chemistry
Polyethylene glycol
010402 general chemistry
01 natural sciences
0104 chemical sciences
Gibbs free energy
chemistry.chemical_compound
symbols.namesake
020401 chemical engineering
chemistry
PEG ratio
symbols
Pitzer equations
Osmotic coefficient
0204 chemical engineering
Ternary operation
Subjects
Details
- ISSN :
- 15205134 and 00219568
- Volume :
- 62
- Database :
- OpenAIRE
- Journal :
- Journal of Chemical & Engineering Data
- Accession number :
- edsair.doi...........8a19299903f0dd2b00e61cd516044054
- Full Text :
- https://doi.org/10.1021/acs.jced.7b00024