ABSTRACT

Precise electrical conductance measurements are reported for some ethanoates, viz. ammonium, lithium, sodium and potassium in pure tetrahydrofuran (THF) and dimethyl sulfoxide (DMSO) and their binary mixtures at 298.15 K. The conductance data have been analyzed by the Fuoss conductance concentration equation to evaluate the limiting molar conductance, the thermodynamic association constant (K_A) and the association diameter (R) for ion-pair formation. The limiting ionic conductances have been estimated from the appropriate division of the limiting molar conductivity value of the reference electrolyte Bu4NBPh4. Furthermore, the conductance data for pure THF have been analyzed by the Fuoss-Kraus theory of triple ions and the values of the ion-pair and triple-ion formation constants (KP and KT) were made and the results have been discussed in terms of molecular scale model.

Compounds

#	Formula	Name
1	C4H8O	tetrahydrofuran
2	C2H6OS	dimethyl sulfoxide
3	C2H3LiO2	lithium acetate
4	C2H3KO2	potassium ethanoate
5	C2H7NO2	ammonium acetate
6	C2H3NaO2	sodium ethanoate
7	C18H39NO2	tetrabutylammonium acetate
8	C24H20BNa	sodium tetraphenylboron

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	Viscosity, Pa*s ; Liquid	Mass fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	5
POMD	2 1	Mass density, kg/m3 ; Liquid	Mass fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	5
POMD	2 1 5	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass ratio of component to other component of binary solvent - 1; Liquid Amount concentration (molarity), mol/dm3 - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	50
POMD	2 1 3	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass ratio of component to other component of binary solvent - 1; Liquid Amount concentration (molarity), mol/dm3 - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	50
POMD	2 1 6	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass ratio of component to other component of binary solvent - 1; Liquid Amount concentration (molarity), mol/dm3 - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	50
POMD	2 1 4	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass ratio of component to other component of binary solvent - 1; Liquid Amount concentration (molarity), mol/dm3 - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	50
POMD	2 1 8	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass ratio of component to other component of binary solvent - 1; Liquid Amount concentration (molarity), mol/dm3 - 8; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	30
POMD	2 1 7	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass ratio of component to other component of binary solvent - 1; Liquid Amount concentration (molarity), mol/dm3 - 7; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	30

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Conductivity is a contrivance to explore ion-pair and triple-ion structure of ethanoates in tetrahydrofuran, dimethyl sulfoxide and their binaries

Roy, M. N.[Mahendra Nath], Chanda, R.[Riju], Chakraborti, P.[Palash], Das, A.[Amrita]

ABSTRACT