ABSTRACT

The enthalpies of solution of H2O and D2O in tetrahydrofuran (THF), 1,4-dioxane (DO) and acetone (AC) were measured calorimetrically at 298.15K. Standard (at the infinite dilution) enthalpies of solution, along with D2O-H2O solute isotope effects on the quantity in question, were calculated. The enthalpies of the solute dissolution were found to be positive by sign and decreasing in magnitude on going from DO to AC and THF, whereas the corresponding solute isotope effects change in a consequence THF greater than AC greater than DO. It was concluded that the enthalpic D2O-H2O effects of water dissolution (solvation) are connected with both the donor-accepting ability and structure-packing peculiarities of the aprotic dipolar solvents compared

Compounds

#	Formula	Name
1	C4H8O2	1,4-dioxane
2	C4H8O	tetrahydrofuran
3	C3H6O	acetone
4	H2O	water
5	D2O	water-d2

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	Phase	Method	#Points
POMD	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	1
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	1
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	1
POMD	2 4	Molar enthalpy of solution, kJ/mol ; Liquid	Mole fraction - 4; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL	1
POMD	2 5	Molar enthalpy of solution, kJ/mol ; Liquid	Mole fraction - 5; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL	1
POMD	1 4	Molar enthalpy of solution, kJ/mol ; Liquid	Mole fraction - 4; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL	1
POMD	1 5	Molar enthalpy of solution, kJ/mol ; Liquid	Mole fraction - 5; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL	1
POMD	3 4	Molar enthalpy of solution, kJ/mol ; Liquid	Mole fraction - 4; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL	1
POMD	3 5	Molar enthalpy of solution, kJ/mol ; Liquid	Mole fraction - 5; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL	1

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Water as a solute in aprotic dipolar solvents. 1. D2O-H2O solute isotope effects on the enthalpy of water dissolution in acetone, tetrahydrofuran and 1,4-dioxane at 298.15 K

Ivanov, E. V., Smirnov, V. I.[Valeriy I.]

ABSTRACT