ABSTRACT

The values of density, rho and speed of sound, u for the saccharides that are structural isomers i.e. D(+)-glucose and D(-)-fructose in (0.2, 0.4, 0.6, and 0.8) mol*kg-1 aqueous solutions of dipotassium oxalate (K2C2O4) at T = (288.15, 298.15, 308.15 and 318.15)K have been measured in the present work. Various volumetric parameters such as apparent molar volume (Vphi), partial molar volume at infinite dilution (Vphio), transfer volume (deltaVphio), have been derived from density records. Experimental values of the speed of sound were used to calculate ultrasonic parameters such as apparent molar isentropic compressibility (Kphi,s), partial molar isentropic compressibility at infinite dilution (Kphi,so), and partial molar isentropic compressibility of transfer (deltaKphi,so). The pair (VAB, KAB) and triplet interaction (VABB, KABB) coefficients have been calculated from transfer parameters by using McMillan-Mayer theory. The structure-making/structure-breaking affinity of the saccharides along with a detailed insight into the physicochemical interactions e.g. ion-hydrophilic, hydrophilic-hydrophilic and hydrophilic-hydrophobic interactions in the saccharide-salt system, have been retrieved through the scrutiny of these calculated parameters.

Compounds

#	Formula	Name
1	C6H12O6	D-glucose
2	C6H12O6	D-fructose
3	C2K2O4	potassium oxalate
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	1 3 4	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	144
POMD	1 3 4	Speed of sound, m/s ; Liquid	Solvent: Molality, mol/kg - 3; Liquid Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	144
POMD	2 3 4	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	144
POMD	2 3 4	Speed of sound, m/s ; Liquid	Solvent: Molality, mol/kg - 3; Liquid Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	144
POMD	3 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	16
POMD	3 4	Speed of sound, m/s ; Liquid	Molality, mol/kg - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	16

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Investigations on the temperature dependent volumetric and ultrasonic properties of structural isomers D(+)-glucose and D(-)-fructose in aqueous dipotassium oxalate solutions

Kumar, Harsh, Kumar, Sumit, Behal, Isha

ABSTRACT