ABSTRACT

Densities and speed of sound for glycine, L-alanine have been measured in aqueous solutions of dipotassium hydrogen phosphate (DKHP) ranging from 0.2, 0.4, 0.6 and 0.8 mol kg-1 at temperatures T = (288.15, 298.15, 308.15 and 318.15) K. The different parameters such as apparent molar volume, limiting apparent molar volume, transfer volume, partial molar expansibility have been derived from density data. Experimental speeds of sound data were used to estimate apparent molar adiabatic compressibility, limiting apparent molar adiabatic compressibility, transfer parameter and hydration number. These parameters have been discussed in the light of ion-ion and ion-solvent interactions.

Compounds

#	Formula	Name
1	C2H5NO2	2-aminoacetic acid
2	C3H7NO2	(S)-2-aminopropanoic acid
3	HK2O4P	dipotassium hydrogen phosphate
4	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	4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	4
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	4
POMD	4 3	Speed of sound, m/s ; Liquid	Molality, mol/kg - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	32
POMD	4 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	32
POMD	1 4	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	20
POMD	1 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	20
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	20
POMD	1 4 3	Speed of sound, m/s ; Liquid	Solvent: Molality, mol/kg - 3; Liquid Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	164
POMD	1 4 3	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 3; Liquid Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	164
POMD	2 4 3	Speed of sound, m/s ; Liquid	Solvent: Molality, mol/kg - 3; Liquid Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	124
POMD	2 4 3	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 3; Liquid Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	148

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Effect of dipotassium hydrogen phosphate on thermodynamic properties of glycine and L-alanine in aqueous solutions at different temperatures

Kumar, H.[Harsh], Kaur, K.[Kirtanjot]

ABSTRACT