Conductance studies of NaCl, KCl, NaBr, KBr, Bu4NBr, and NaBPh4 in water+2-methoxyethanol mixtures at 298.15K

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

“…The results of our previous works on the water-alcohol mixtures [1][2][3][4][5][6][7] and mixtures of water with alkoxyalcohols [13][14][15][16] seem to confirm this opinion. Also interesting are the results of Bĕster-Rogač [26] on the electrical conductivity of NaCl in water-dioxane mixtures.…”

“…Such character of changes Fig. 1 Walden product Λ o ·η· 10 −2 [S·cm 2 ·mol −1 ·mPa·s], of NaBr, NaI, KCl, NaBPh 4 , and NBu 4 I as function of the mole fraction, x 2 , in water (1)+2-propoxyethanol (2) mixtures at 298.15 K: empty diamonds NaCl, empty squares NaBr, empty triangles NaI, filled triangles KCl, filled squares NaBPh 4 , and filled diamonds NBu 4 I in the value of R was observed by us in all studied waterorganic solvent mixtures [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. This may be due to the incorporation of solvent molecules between the ions forming the ion pair, both in terms of number and size of these molecules.…”

“…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].…”

“…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].…”