Conductance Studies of NaCl, KCl, NaBr, NaI, NaBPh₄, and Bu₄NI in Water + 2-Ethoxyethanol Mixtures at 298.15 K

Abstract

Property: index of refraction Experimental Method: digital precision refractometer Combined Expanded Uncertainty (k = 2) for the Property: 2σ(n D ) = 2•10 -5 State Variables and Constraints: temperature T, pressure p = laboratory pressure Standard Uncertainty (k = 1) for each Variable and Constraint: σ(T) = 0.01 K; σ(p) = 5%Table: Supplementary Info SM 1 System type (Pure, Binary, Ternary): Binary Chemical System(s): water + 2-ethoxyethanol Property: viscosity Experimental Method: Ubbelohde viscometer Combined Expanded Uncertainty (k = 2) for the Property: 2σ(η) = 0.0030 mPa•s State Variables and Constraints: temperature T, mole fraction of 2-ethoxyethanol x 2 , pressure p = laboratory pressure Standard Uncertainty (k = 1) for each Variable and Constraint: σ(T) = 0.01 K; σ(p) = 5%, σ(x 2 ) = 0.0001 Table: Supplementary Info SM 2 System type (Pure, Binary, Ternary): Ternary Chemical System(s): sodium chloride + water + 2-ethoxyethanol potassium chloride + water + 2-ethoxyethanol sodium bromide + water + 2-ethoxyethanol sodium iodide + water + 2-ethoxyethanol sodium tetraphenylborate + water + 2-ethoxyethanol tetrabutylammonium iodide + water + 2-ethoxyethanol Property: molar conductance Experimental Method: RLC Precision Bridge Combined Expanded Uncertainty (k = 2) for the Property: 2σ(Λ) = 0.02 -0.1 S•cm 2 •mol -1State Variables and Constraints: temperature T, mole fraction of 2-ethoxyethanol x 2 , molar concentration of salt c, pressure p = laboratory pressure Standard Uncertainty (k = 1) for each Variable and Constraint: σ(T) = 0.01 K; σ(p) = 5%, σ(x 2 ) = 0.0001, σ(c) = 0.003%

Conductance studies of NaCl, KCl, NaBr, KBr, NaI, Bu4NI, and NaBPh4 in water + 2-propoxyethanol mixtures at 298.15 K

“…The uncertainty of the measured densities estimated was 5·10 −6 g·cm −3 . The experimental procedure of viscosimetric and densimetric measurements was described in our previous papers [13][14][15][16]. The method of measuring relative permittivity was described in detail in our earlier work [20].…”

“…The literature review shows that the differences between the values of conductivity obtained by various authors can reach up to 100 % [13,15]. Moreover, analyzing the values of physicochemical properties of alkoxyethanols and their aqueous mixtures, we can notice that the literature data are not always consistent [13,15]. Thus, the analysis of these literature data prompted us to carry out more systematic and extensive studies on conductometric properties of electrolytes in the water+2-propoxyethanol mixtures.…”

“…This work is a continuation of our investigations of electrolyte solutions in mixed solvents (water-alcohol [1][2][3][4][5][6][7], water-amide [8][9][10][11][12] and water-alkoxyethanol [13][14][15][16]). …”

“…In order to determine ionic conductivities, we used the assumption of equality of ionic conductivities of NBu 4 + and BPh 4 − ions. Previously, we examined the conductivity of selected electrolytes in the mixtures of water+2-methoxyethanol [15,16], water+2-ethoxyethanol [13], and water+2-butoxyethanol [14], focusing mainly on the waterrich mixtures. The literature review shows that the differences between the values of conductivity obtained by various authors can reach up to 100 % [13,15].…”

“…Previously, we examined the conductivity of selected electrolytes in the mixtures of water+2-methoxyethanol [15,16], water+2-ethoxyethanol [13], and water+2-butoxyethanol [14], focusing mainly on the waterrich mixtures. The literature review shows that the differences between the values of conductivity obtained by various authors can reach up to 100 % [13,15]. Moreover, analyzing the values of physicochemical properties of alkoxyethanols and their aqueous mixtures, we can notice that the literature data are not always consistent [13,15].…”