ABSTRACT

Partial molar volume, ?v0, isentropic compressibility, s, and partial molar isentropic compressibility, deg 0 k of glycine betaine in aqueous and aqueous KCl or MgCl2 solutions have been computed using the experimental density and speed of sound data at temperatures, T = 288.15 318.15 K. The transfer partial molar volumes, tr?v0, and transfer partial molar isentropic compressibilities, trdeg 0 k, have also been evaluated using the experimental data. The partial molar volumes of glycine betaine were computed using the usual equation as well as the equation employed by Pitkanen et al. So obtained values have been compared with literature values. The variations in experimental and computed parameters have been discussed in terms of solute solvent and solute solute interactions.

Compounds

#	Formula	Name
1	C5H11NO2	(trimethylammonio)acetate
2	ClK	potassium chloride
3	Cl2Mg	magnesium chloride
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	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	7
POMD	1 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	63
POMD	1 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	63
POMD	1 2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 2; Liquid	Liquid	Vibrating tube method	63
POMD	1 2 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 2; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	63
POMD	1 4 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 3; Liquid	Liquid	Vibrating tube method	63
POMD	1 4 3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 3; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	63
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 2; Liquid	Liquid	Vibrating tube method	7
POMD	2 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 2; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	7
POMD	4 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 3; Liquid	Liquid	Vibrating tube method	7
POMD	4 3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 3; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	7

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Partial molar volume and partial molar isentropic compressibility study of glycine betaine in aqueous and aqueous KCl or MgCl2 solutions at temperatures T = 288.15 318.15 K

Karanth, V. R., Bhat, D. K.[Denthaje Krishna]

ABSTRACT