ABSTRACT

The density, speed of sound and refractive index for (water + alkali metal) (Li, Na and K) were measured over their entire composition range at T = (298.15, 303.15 and 308.15) K. The isentropic compressibility, change and relative change in isentropic compressibility, apparent molal compressibility, acoustic impedance, speed of light and molar refractions were calculated using values of the experimental density, speed of sound, and refractive index, respectively. Redlich Kister smoothing linear equation was used for obtaining limiting sound velocity, isentropic compressibility and refractive index data. Ion ion, ion-dipolar, solute solvent and intermolecular interactions have been interpreted with thermodynamic properties.

Compounds

#	Formula	Name
1	H3O4P	phosphoric acid
2	K3O4P	tripotassium phosphate
3	HK2O4P	dipotassium hydrogen phosphate
4	H2KO4P	monopotassium phosphate
5	Na3O4P	trisodium phosphate
6	HNa2O4P	disodium hydrogen phosphate
7	H2NaO4P	sodium dihydrogen phosphate
8	H2LiO4P	lithium dihydrogen phosphate
9	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	1 9	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	1 9	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	1 9	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	15
POMD	9 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	9 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	9 2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	15
POMD	9 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	9 3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	9 3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	15
POMD	9 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	9 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	9 4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	15
POMD	5 9	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	5 9	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	5 9	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	15
POMD	6 9	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 6; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	6 9	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 6; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	6 9	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 6; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	15
POMD	7 9	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 7; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	7 9	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 7; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	7 9	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 7; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	15
POMD	9 8	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 8; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	9 8	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 8; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	9 8	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 8; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	15

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Comparative study of density, sound velocity and refractive index for (water + alkali metal) phosphates aqueous systems at T = (298.15, 303.15, and 308.15) K

Ameta, R. K., Singh, M.[Man], Kale, R. K.

ABSTRACT