ABSTRACT

The experimental data of density (q) and speed of sound (u) in the temperature range (275.15 to 283.15) K have been obtained for aqueous solutions of di-methyl sulphoxide (DMSO), ethylene di-amine (EDA), polyethylene glycol-200 (PEG-200) and polyethylene glycol- 400 (PEG-400). The specific heat (Cp) data for aqueous solutions of DMSO, EDA, and PEG-200 have also been obtained at T = 279.15 K. The data obtained are used to calculate the derived parameters like isentropic compressibility (bS), isothermal compressibility (bT), apparent molar volume (/V), coefficient of thermal expansion (a), apparent molar isentropic compressibility (/KS), and internal pressure (Pi). The limiting values of apparent molar volume o/ VP and apparent molar isentropic compressibility o/ KSP were also obtained. From these data, the temperature coefficients of limiting properties were computed. The results obtained were interpreted in terms of solute solvent and solute solute interactions and structure making and structure braking abilities of the solute. The results of Pi are used to discuss the extent of hydrogen bonding between solute and solvent (water).

Compounds

#	Formula	Name
1	C2H8N2	ethane-1,2-diamine
2	H2O	water
3	C2H6OS	dimethyl sulfoxide

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	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Large sample (1 g) DSC	7
POMD	1 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	FPINT:UFactor:32	40
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	40
POMD	3 2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Large sample (1 g) DSC	7
POMD	3 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	FPINT:UFactor:32	40
POMD	3 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	40

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermodynamic studies of some non-electrolytes in aqueous solutions at low temperatures

Dhondge, S. S.[Sudhakar S.], Pandhurnekar, C.[Chandrashekhar], Ramesh, L.

ABSTRACT