ABSTRACT

Values of the enthalpy of dilution were measured for L-prolinol in pure water and N,N-dimethylformamide (DMF) aqueous solutions with various mass fractions of DMF at T = 298.15 K using a flow-mixing microcalorimeter. A pseudo phase equilibrium model was proposed to simplify the complex aggregation equilibrium and interpret the abnormality in the dilution enthalpy, which together with the McMillan Mayer approach was used to fit the experimental data to obtain the enthalpic pairwise interaction coefficients and the molar aggregation enthalpies of L-prolinol in DMF aqueous solutions. The results are discussed in terms of the hydrophobic interaction and the interactions between the solvated solutes.

Compounds

#	Formula	Name
1	C5H11NO	2-pyrrolidinemethanol
2	C3H7NO	dimethylformamide
3	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	2 1 3	Molar enthalpy of dilution, kJ/mol ; Liquid	Solvent: Mass fraction - 2; Liquid Initial mole fraction of solute; Liquid Final mole fraction of solute; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Flow calorimetry	137
POMD	1 3	Molar enthalpy of dilution, kJ/mol ; Liquid	Initial mole fraction of solute; Liquid Final mole fraction of solute; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Flow calorimetry	25

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

The dilution enthalpies of L-prolinol in N,N-dimethylformamide aqueous solutions at T = 298.15 K

Fan, D.[Dashuang], Chen, Z.[Zhizhong], Shen, W.[Weiguo]

ABSTRACT