ABSTRACT

This article deals with the mean activity coefficients of LiCl in amide water mixtures with both epsilon-increasing co-solvent (urea water, N-methylformamide water), and epsilon-decreasing co-solvent (N,N-dimethylformamide water, N,N-dimethylacetamide water) systems at 298.15 K by potentiometric method. Meanwhile, thermodynamic properties including the osmotic coefficients, the excess Gibbs free energy, the standard solubility product, the primary LiCl hydration number and the standard free energy of transference from water to the mixtures were also calculated. The nonideal behavior of these systems has been discussed in terms of the Pitzer, the Modified Pitzer and the extended Debye-Huckel equations parameters.

Compounds

#	Formula	Name
1	CH4N2O	urea
2	H2O	water
3	C2H5NO	N-methylformamide
4	C3H7NO	dimethylformamide
5	C4H9NO	N,N-dimethylethanamide
6	ClLi	lithium chloride

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1 2	Mass density, kg/m3 ; Liquid	Mass fraction - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	5
POMD	1 2	Relative permittivity at various frequencies ; Liquid	Mass fraction - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Frequency, MHz; Liquid	Liquid	Dielectric constant meter	5
POMD	3 2	Mass density, kg/m3 ; Liquid	Mass fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	4
POMD	3 2	Relative permittivity at various frequencies ; Liquid	Mass fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Frequency, MHz; Liquid	Liquid	Dielectric constant meter	5
POMD	4 2	Mass density, kg/m3 ; Liquid	Mass fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	4
POMD	4 2	Relative permittivity at various frequencies ; Liquid	Mass fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Frequency, MHz; Liquid	Liquid	Dielectric constant meter	5
POMD	5 2	Mass density, kg/m3 ; Liquid	Mass fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	4
POMD	5 2	Relative permittivity at various frequencies ; Liquid	Mass fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Frequency, MHz; Liquid	Liquid	Dielectric constant meter	5
POMD	1 6 2	Mean ionic activity coefficient - 6 ; Liquid	Solvent: Mass fraction - 1; Liquid Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calculated from EMF cell potential	130
POMD	3 6 2	Mean ionic activity coefficient - 6 ; Liquid	Solvent: Mass fraction - 3; Liquid Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calculated from EMF cell potential	144
POMD	4 6 2	Mean ionic activity coefficient - 6 ; Liquid	Solvent: Mass fraction - 4; Liquid Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calculated from EMF cell potential	156
POMD	5 6 2	Mean ionic activity coefficient - 6 ; Liquid	Solvent: Mass fraction - 5; Liquid Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calculated from EMF cell potential	134
POMD	6 2	Mean ionic activity coefficient - 6 ; Liquid	Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calculated from EMF cell potential	141

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Investigating thermodynamic properties of LiCl in amide - water mixtures with e-increasing and e-decreasing solvent at 298.15K

Zhao, X.[Xuehong], Li, S.[Shu'ni], Zhai, Q.[Quanguo], Jiang, Y.[Yucheng], Hu, M.[Mancheng]

ABSTRACT