Vapor pressure measurements on non-aqueous electrolyte solutions. Part 3. Solutions of sodium iodide in ethanol, 2-propanol, and acetonitrile
Precise vapor pressure data for solutions of Nal in ethanol from 0.04 to 1.9m, and 2-propanol and acetonitrile from approximately 0.06 to 1.5m are communicated and discussed. Polynomials in molalities are given for calculating precise reference values. Osmotic coefficients were calculated by taking into account the second virial coefficients of solvent vapors. Discussion of the data at low concentrations is based on the chemical model of electrolyte solutions and ion-pair association constants are compared to those obtained from other properties of sodium iodide solutions. Pitzer equations are used to reproduce osmotic and activity coefficients at high concentrations; the set of Pitzer parameters for methanol solutions b = 3.2, ..cap alpha../sub 1/ = 2.0, and ..cap alpha../sub 2/ = 20.0 may be used for ethanol, 2-propanol, and acetonitrile solutions.
- Research Organization:
- Universitaet Regensburg, West Germany
- OSTI ID:
- 6191836
- Journal Information:
- J. Solution Chem.; (United States), Vol. 15:10
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACETONITRILE
THERMODYNAMIC ACTIVITY
VAPOR PRESSURE
ELECTROLYTES
ETHANOL
METHANOL
PROPANOLS
SODIUM IODIDES
CHEMICAL REACTION KINETICS
DENSITY
ELECTRIC CONDUCTIVITY
ION EXCHANGE
MATHEMATICAL MODELS
NONAQUEOUS SOLVENTS
OSMOSIS
PERMITTIVITY
PRESSURE MEASUREMENT
QUANTITY RATIO
VIRIAL EQUATION
ALCOHOLS
ALKALI METAL COMPOUNDS
DIFFUSION
ELECTRICAL PROPERTIES
EQUATIONS
HALIDES
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
KINETICS
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOSPHORS
PHYSICAL PROPERTIES
REACTION KINETICS
SODIUM COMPOUNDS
SOLVENTS
THERMODYNAMIC PROPERTIES
400201* - Chemical & Physicochemical Properties
400400 - Electrochemistry