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

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Abstract

The molar conductances of sodium chloride (NaCl), potassium chloride (KCl), sodium bromide (NaBr), sodium iodide (NaI), tetrabutylammonium iodide (Bu4NI), and sodium tetraphenylborate (NaBPh4) in water + 2-propoxyethanol binary mixtures at T = 298.15 K were determined. Conductance values were analyzed using a low-concentration chemical model (lcCM). The ionic conductivities of Na+, K+, Bu4N+, Cl, I, Br, and BPh4 ions were determined using Fuoss–Hirsch’s assumption. The dependencies of the values of limiting molar conductance (Λ o), limiting ionic conductance of the individual anions (λ ±o ), and Walden products (Λ o ⋅ η and λ ±o  ⋅ η) as a function of the composition of water + 2-propoxyethanol binary mixtures were discussed.

Limiting molar conductances Λ o [S·cm2·mol−1] of NaCl, NaBr, NaI, KCl, NaBPh4, and NBu4I as a 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 NaBPh4, and filled diamonds NBu4I

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Acknowledgments

The present work was financed by the University of Lodz (Grant number 506/031121)

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Correspondence to Adam Bald.

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Bald, A., Kinart, Z. Conductance studies of NaCl, KCl, NaBr, KBr, NaI, Bu4NI, and NaBPh4 in water + 2-propoxyethanol mixtures at 298.15 K. Ionics 21, 2781–2787 (2015). https://doi.org/10.1007/s11581-015-1470-7

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  • DOI: https://doi.org/10.1007/s11581-015-1470-7

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