Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 118, Issue 1-3, Pages 111-118Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molliq.2004.07.023
Keywords
electrolyte conductivity; electrolyte solutions; cobalt sulfate; nickel sulfate; copper sulfate; zinc sulfate; chemical model
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Electric conductivities of cobalt, nickel, copper and zinc sulfate solutions in water were measured from 5 to 35 degrees C (steps of 5 degrees C) in the concentration range 10(-4) < c/(mol dm(-3)) < 4x10(-3). Data analysis, based on the chemical model of electrolyte solutions including short-range interactions, yields the limiting molar conductivity Lambda(infinity) and the association constant K-A. The standard Gibbs energy, enthalpy and entropy of the ion-pairing process were calculated from the temperature dependence of the ion-association constants. (c) 2004 Elsevier B.V. All rights reserved.
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