ABSTRACT

The experimental measurements of the speed of sound and density in binary solutions of ethylene glycol, propylene glycol, propylene carbonate, and tetramethylurea (as solvents) and water as the solute in the concentration range of 0.1 mol Ae kg 1 to 1 mol Ae kg 1 at T = 298.15 K are reported. The data are used to obtain the isentropic compressibility (bS) of solutions. The apparent molar volume (/V) and compressibility o/KS P of water at different concentrations of water are evaluated. The data of limiting partial molar volume o/ VP and compressibility o/ KS P of water and their concentration variation are examined to study the effect due to water solvent and water water interactions. It has been observed that there is a loss of volume as well as of compressibility of liquid water molecules in transferring them from the pure liquid state to a non-aqueous solvent except for propylene carbonate (in case of volumes). The data are compared with similar data obtained for water in alcohols and other apolar solvents like dioxane, acetonitrile, and dimethylformamide. A possible interpretation has been advanced on the basis of H-bonding characteristics and other structural details of the solvents and water to account for the effects due to water water and water solvent interactions.

Compounds

#	Formula	Name
1	C2H6O2	1,2-ethanediol
2	C3H8O2	1,2-propanediol
3	C4H6O3	4-methyl-1,3-dioxolan-2-one
4	C5H12N2O	tetramethylurea
5	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	Speed of sound, m/s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:6	1
POMD	2	Speed of sound, m/s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB::UFactor:4	1
POMD	3	Speed of sound, m/s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB::UFactor:6	1
POMD	4	Speed of sound, m/s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB::UFactor:6	1
POMD	1 5	Speed of sound, m/s ; Liquid	Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	10
POMD	1 5	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:6	10
POMD	2 5	Speed of sound, m/s ; Liquid	Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	8
POMD	2 5	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	8
POMD	3 5	Speed of sound, m/s ; Liquid	Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	9
POMD	3 5	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:6	9
POMD	4 5	Speed of sound, m/s ; Liquid	Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	9
POMD	4 5	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:6	9

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Volumetric and compressibility properties of liquid water as a solute in glycolic, propylene carbonate, and tetramethylurea solutions at T = 298.15 K

Kushare, S. K.[Sopan K.], Dagade, D. H.[Dilip H], Patil, K. J.[Kesharsingh J.]

ABSTRACT