ABSTRACT

Densities of aqueous solutions of Me4NBr, Et4NBr, and Bu4NBr have been measured using a magnetic float apparatus. The concentration range was from (0.005 to 0.04) mol * kg-1. The temperatures were (278.15, 288.15, 293.15, and 298.15) K. The experimental values were used to calculate apparent molal volumes, partial molal volumes at infinite dilution, and partial molal expansibilities at (278.15, 288.15, 293.15, and 298.15) K. The ionic contributions to the properties were calculated using the additivity rule. The results are interpreted in terms of solute-solvent interactions.

Compounds

#	Formula	Name
1	C4H12BrN	tetramethylammonium bromide
2	C8H20BrN	tetraethylammonium bromide
3	C16H36BrN	tetrabutylammonium bromide
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 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Buoyancy - hydrostatic balance with magnetic suspension - one sinker	36
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Buoyancy - hydrostatic balance with magnetic suspension - one sinker	42
POMD	3 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Buoyancy - hydrostatic balance with magnetic suspension - one sinker	40

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Apparent Molal Volumes and Expansibilities of Tetraalkylammonium Bromides in Dilute Aqueous Solutions

Blanco, L. H.[Luis H.], Salamanca, Y. P.[Yina P.], Vargas, E. F.[Edgar F.]

ABSTRACT