ABSTRACT

Apparent molal volumes (V.), apparent molal compressibilities (K.) and viscosity A and B-coefficients of potassium fluoride in aqueous solutions of dimethyl sulfoxide (DMSO), have been evaluated at T = 303.15, 308.15, 313.15 and 318.15 K from density, velocity and viscosity data, respectively. The standard partial molal volumes (V. 0), standard partial molal volumes of transfer ( V. 0), standard partial molal compressibilities (K. 0) and standard partial molal compressibilities of transfer ( K. 0) have been determined and interpreted in terms of solute.solvent interactions. Hepler fs coefficient ( Y2V. 0/ YT2) and variation of B coefficient with temperature (dB/dT) have been interpreted in terms of the structure-making/structurebreaking effects of potassium fluoride in the mixture.

Compounds

#	Formula	Name
1	FK	potassium fluoride
2	C2H6OS	dimethyl sulfoxide
3	H2O	water

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	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	2
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Linear variable-path acoustic interferometer	2
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	2
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	4
POMD	3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Linear variable-path acoustic interferometer	4
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	4
POMD	3 1	Viscosity, Pa*s ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	16
POMD	3 1	Speed of sound, m/s ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Linear variable-path acoustic interferometer	16
POMD	3 1	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	16
POMD	2 3	Viscosity, Pa*s ; Liquid	Mole fraction - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	16
POMD	2 3	Speed of sound, m/s ; Liquid	Mole fraction - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Linear variable-path acoustic interferometer	16
POMD	2 3	Mass density, kg/m3 ; Liquid	Mole fraction - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	16
POMD	2 3 1	Viscosity, Pa*s ; Liquid	Molality, mol/kg - 1; Liquid Solvent: Mole fraction - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	100
POMD	2 3 1	Speed of sound, m/s ; Liquid	Molality, mol/kg - 1; Liquid Solvent: Mole fraction - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Linear variable-path acoustic interferometer	100
POMD	2 3 1	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid Solvent: Mole fraction - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	100

Thermodynamics Research Center / ThermoML | Thermochimica Acta

THERMODYNAMIC INTERACTIONS OF POTASSIUM FLUORIDE IN AQUEOUS DIMETHYL SULFOXIDE SOLUTIONS AT DIFFERENT TEMPERATURES

Rajagopal, K., Gladson, S. E.

ABSTRACT