ABSTRACT

In the present communication, experimental values of density and speed of sound of aqueous solutions of three amino acids, namely glycine, L-alanine and b-alanine at different temperatures i.e. T = (275.15, 279.15, and 283.15) K are reported. From the experimental values, different derived parameters such as apparent molar volume of solute, isentropic compressibility of solution, apparent molar isentropic compressibility of solute have been calculated. The limiting values of apparent molar volume of solute, apparent molar isentropic compressibility of solute and apparent molar expansivity in the aqueous medium have also been obtained. The temperature coefficients of these limiting properties have also been computed. The results obtained were interpreted in terms of solute-solvent and solute-solute interactions, and structure making and structure breaking abilities of the solute in aqueous medium.

Compounds

#	Formula	Name
1	C3H7NO2	(S)-2-aminopropanoic acid
2	H2O	water
3	C3H7NO2	3-aminopropanoic acid
4	C2H5NO2	2-aminoacetic acid

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	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Linear variable-path acoustic interferometer	38
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	38
POMD	3 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Linear variable-path acoustic interferometer	47
POMD	3 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	47
POMD	4 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Linear variable-path acoustic interferometer	48
POMD	4 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	48

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Study of thermodynamic properties of aqueous binary mixtures of glycine, L-alanine and b-alanine at low temperatures (T = 275.15, 279.15, and 283.15) K

Dhondge, S. S.[Sudhakar S.], Paliwal, R.[Rashmi], Bhave, N.[Narayan], Pandhurnekar, C.[Chandrashekhar]

ABSTRACT