Abstract
Precise measurements of the electrical conductances of solutions of potassium thiocyanate (KCNS), ammonium thiocyanate (NH4CNS), sodium nitrate (NaNO3) and ammonium nitrate (NH4NO3) in 2-ethoxyethanol (EE) at temperatures 35, 40, 45 and 50,∘C are reported. The conductance data have been analyzed by the 1978 Fuoss conductance equation. A thermodynamic analysis of the ionic association processes has also been made and the Coulombic forces are found to play a major role in the association processes. The ionic contributions to the limiting equivalent conductances have been determined using the reference electrolyte method. Strong association was found for all these electrolytes in this solvent medium. The cations are found to be substantially solvated in 2-ethoxyethanol, whereas the anions appear to have only weak interaction with the solvent molecules.
Similar content being viewed by others
References
Das, B., Hazra, D.K.: Conductometric, viscometric, and spectroscopic investigation on the solvation phenomena of alkali-metal ions and ion-pairs in 2-methoxyethanol. J. Phys. Chem. 99, 269–273 (1995)
Muhuri, P.K., Das, B., Hazra, D.K.: Ionic association of some lithium salts in 1,2-dimethoxyethane. A Raman spectroscopic and conductivity study. J. Phys. Chem. B 101, 3329–3332 (1997)
Victor, P.J., Muhuri, P.K., Das, B., Hazra, D.K.: Thermodynamics of ion association and solvation in 2-methoxyethanol: Behavior of tetraphenylarsonium, picrate and tetraphenylborate ions from conductivity and ultrasonic data. J. Phys. Chem. B 103, 11227–11232 (1999)
Victor, P.J., Muhuri, P.K., Das, B., Hazra, D.K.: Thermodynamics of ionic association of tetraphenylphosphonium, tetraphenylarsonium, and some common cations in 2-methoxyethanol using conductometry and FT-Raman spectroscopy. J. Phys. Chem. B 104, 5350–5356 (2000)
Victor, P.J., Das, B. Hazra, D.K.: A study on the solvation phenomena of some sodium salts in 1,2-dimethoxyethane from conductance, viscosity, ultrasonic velocity, and FT-Raman spectral measurements. J. Phys. Chem. A 105, 5960–5964 (2001)
Guha, C., Chakraborty, J.M., Karanjai, S., Das, B.: The structure and thermodynamics of ion association and solvation of some thiocyanates and nitrates in 2-methoxyethanol studied by conductometry and FTIR spectroscopy. J. Phys. Chem. B. 107, 12814–12819 (2003)
Haldar, P., Das, B.: Electrical conductances of tetrabutylammonium bromide, sodium tetraphenylborate and sodium bromide in 2-ethosyethanol in the temperature range 35–50 ∘C. Z. Phys. Chem. 218, 599–609 (2004)
Haldar, P., Das, B.: Viscosities of some tetralkylammonium bromides in 2-ethoxyethanol at 308.15, 313.15, 318.15, and 323.15 K. Can. J. Chem. 83, 499–504 (2005)
Franks, F., Ives, D.J.G.: Structural properties of alcohol-water mixtures. Q. Rev. Chem. Soc. 20, 1–44 (1966)
Murthy, T.S., Rambabu, B., Lakshminarayana, K.: Ultrasonic studies in alkali metal salt solutions in 10%(W/W) 2-ethoxyethanol-water mixture. Acoust. Lett. 17, 111–118 (1993)
Riddik, J.A., Bunger, W.B., Sakano, T.: Techniques of Chemistry, Vol II, Wiley, New York (1986)
Douheret, G., Pal, A.: Dielectric constants and densities of aqueous mixtures of 2-alkoxyethanols at 25 ∘C. J. Chem. Eng. Data 32, 40–43(1998)
Dasgupta, D., Das, S., Hazra, D.K.: Conductance studies of tetra-alkylammonium bromide in 2-methoxymethanol at 25 ∘C. J. Chem. Soc., Faraday Trans. 84, 1057–1063 (1988)
Muhuri, P.K., Hazra, D.K.: Electrical conductances for some tetraalkyammonium bromides, lithium tetrafluoroborate and tetrabutylammonium tetrabutylborate. J. Chem. Soc., Faradays Trans. 87, 3511–3513 (1991)
Fuoss, R.M.: Paired ions: Dipolar pairs as subset of diffusion pairs. Proc. Natl. Acad. Sci. U.S.A. 75, 16–20 (1978)
Fuoss, R.M.: Conductance-concentration function for the paired ion model. J. Phys. Chem. 82, 2427–2440 (1978)
Fuoss, R.M., Shedlovsky, T.: Extrapolation of conductance data for weak electrolytes. J. Am. Chem. Soc. 71, 1496–1498 (1949)
Marcus, Y.: Ion Solvation, John Wiley and Sons, New York (1985)
Iwamoto, R.: Infrared study on molecular conformations of dialkoxyethanes and related compounds. Spectrochim. Acta Part A 27, 2385–2399 (1971)
Kuhn, L.P., Wires, R.A.: The hydrogen bond. VI. Equilibrium between hydrogen bonded and nonbonded conformation of α,ω -diol monomethyl ethers. J. Am. Chem. Soc. 86, 2161–2165 (1964)
Barthel, J., Gores, H.J., Kraml, L.: Effects of electronegative substituents of anions on ion-pair formation. 1. Temperature dependence of the conductivity of lithium fluoroacetate and alkali-metal acetate solutions in dimethyl sulfoxide. J. Phys. Chem. 100, 1283–1287 (1996)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
De, R., Guha, C. & Das, B. Ion Association and Solvation Behavior of Some 1-1 Electrolytes in 2-Ethoxyethanol Probed by a Conductometric Study. J Solution Chem 35, 1505–1514 (2006). https://doi.org/10.1007/s10953-006-9078-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10953-006-9078-1