NDLI: Ideal Behavior of Water Solutions of Strong Electrolytes and Non-electrolytes at High Concentrations

Content Provider	Springer Nature Link
Author	Zavitsas, Andreas A.
Copyright Year	2010
Abstract	Contrary to widely held beliefs, many concentrated aqueous solutions of strong electrolytes and nonelectrolytes are shown to behave ideally by calculating the activity of water (a $_{w}$) from vapor pressure data. The mole fraction of water (x $_{w}$) is equal to the water activity a $_{w}$(Raoult’s Law) when the mole fraction of water is calculated by accounting for water strongly bound to the solute, which is then not available to act as solvent. In this case x $_{w}$=(55.51−mH $_{T}$)/(55.51−mH $_{T}$+im), where m is the molality of the solute particles, i is the stoichiometric number of solute particles produced per mole of dissolved solute, and H $_{T}$ is the thermodynamic hydration number H $_{T}$. Published reservations about previous work of this type are addressed. The values of H $_{T}$ vary little over wide ranges of concentration and correlate with the Hofmeister series, the B coefficient of the Jones-Dole viscosity equation, and other properties of water. Activity coefficients of the bulk or “free” water remain at unity even at high concentrations.
Starting Page	301
Ending Page	317
Page Count	17
File Format	PDF
ISSN	00959782
Journal	Journal of Solution Chemistry
Volume Number	39
Issue Number	3
e-ISSN	15728927
Language	English
Publisher	Springer US
Publisher Date	2010-03-07
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aqueous solutions Ideal solutions Thermodynamic hydration number Hofmeister series Condensed Matter Physics Inorganic Chemistry Oceanography Geochemistry Industrial Chemistry/Chemical Engineering Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Biochemistry Molecular Biology Biophysics Physical and Theoretical Chemistry

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Comments on “Ideal Behavior of Water Solutions of Strong Electrolytes and Non-electrolytes at High Concentrations” by A.A. Zavitsas {Journal of Solution Chemistry 39, 301–317 (2010)}

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Comments on “Ideal Behavior of Water Solutions of Strong Electrolytes and Non-electrolytes at High Concentrations” by A.A. Zavitsas {Journal of Solution Chemistry 39, 301–317 (2010)}

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