The application of the pitzer equations to 1-1 electrolytes in mixed solvents |
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Authors: | Donald S P Koh Kean H Khoo Chee-Yan Chan |
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Institution: | (1) Department of Chemistry, University of Malaya, 22-11 Kuala Lumpur, Malaysia |
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Abstract: | Pitzer's equation for the activity coefficient has been applied to LiCl, NaCl, KCl, RbCl, CsCl, and HCl in methanol-water mixtures at 25°C. The two parameters,
MX
(0)
and
MX
(1)
, were obtained by the method of least squares. The same values of b and as for aqueous systems could be used for the methanol-water mixtures without greatly affecting the standard deviation of the fit.
MX
(0)
was found to decrease with methanol content for the alkali metal chlorides whereas
MX
(1)
was found to increase. For HCl, however, a slight maximum and a minimum were found in the values of
MX
(0)
while a maximum was observed in the values of
MX
(1)
. |
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Keywords: | Pitzer's equation activity coefficients 1-1 electrolytes alkali metal chlorides hydrochloric acid mixed solvents methanol-water solvents |
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