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

Electrical Conductivity Studies of Tetraalkylammonium Bromides in Aqueous Solutions at Several Temperatures

Salamanca, Y. P.[Yina P.], Blanco, L. H.[Luis H.], Buchner, R.[Richard], Vargas, E. F.[Edgar F.]
J. Chem. Eng. Data 2012, 57, 8, 2203-2210
ABSTRACT
The molar electrical conductivities of tetramethylammonium, tetraethylamonium, tetra-n-propylammonium, and tetra-n-butylammomium bromides in aqueous solutions at (278.15, 283.15, 288.15, 293.15, and 298.15) K have been measured in the concentration range from (0.002 to 0.04) mol*kg 1. The data were analyzed according to the low-concentration chemical model (lcCM) of Barthel. Values of the limiting molar conductivities, ?8, and association constants, KA, were evaluated. Using known values for the limiting molar conductivity of bromide ion, the limiting molar conductivities of the tetraalkylammonium cations were evaluated at all temperatures. The Walden product and the Eyring activation enthalpy were calculated. The results are discussed in terms of solute solvent interactions.
Compounds
# Formula Name
1 C4H12BrN tetramethylammonium bromide
2 C8H20BrN tetraethylammonium bromide
3 C12H28BrN tetrapropylammonium bromide
4 C16H36BrN tetrabutylammonium bromide
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
  • 2
  • 5
  • Molar conductivity, S*m2/mol ; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Alternating current cell with electrodes
  • 50
  • POMD
  • 3
  • 5
  • Molar conductivity, S*m2/mol ; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Alternating current cell with electrodes
  • 55
  • POMD
  • 4
  • 5
  • Molar conductivity, S*m2/mol ; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 4; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Alternating current cell with electrodes
  • 63
  • POMD
  • 1
  • 5
  • Molar conductivity, S*m2/mol ; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Alternating current cell with electrodes
  • 50