Conductivity is a contrivance to explore ion-pair and triple-ion structure of ethanoates in tetrahydrofuran, dimethyl sulfoxide and their binaries

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• 作者：Mahendra Nath Roy ; ^{mahendraroy2002@yahoo.co.in} ; ^{rinky_027@rediffmail.com} ; Riju Chanda ^{chanda.riju@yahoo.com} ; Palash Chakraborti ^{chakrabortypalash@yahoo.com} ; Amrita Das ^{amritapdwc@yahoo.co.in}
• 关键词：Association constant ; Walden product ; Ion-pair ; Triple-ion ; Solvation
• 刊名：Fluid Phase Equilibria
• 出版年：2012
• 期刊代码：32_03783812
• 类别：ce
• 出版时间：25 May, 2012
• 卷：322-323
• 期：Complete
• 页码：159-166
• 文件大小：443 K

摘要

Precise electrical conductance measurements are reported for some ethanoates, viz. ammonium, lithium, sodium and potassium in pure tetrahydrofuran (THF) and dimethyl sulfoxide (DMSO) and their binary mixtures at 298.15 K. The conductance data have been analyzed by the Fuoss conductance-concentration equation to evaluate the limiting molar conductance (螞^o), the thermodynamic association constant (K_A) and the association diameter (R) for ion-pair formation. The limiting ionic conductances have been estimated from the appropriate division of the limiting molar conductivity value of the 鈥渞eference electrolyte鈥?Bu₄NBPh₄. Furthermore, the conductance data for pure THF have been analyzed by the Fuoss-Kraus theory of triple ions and the values of the ion-pair and triple-ion formation constants (K_P and K_T) were made and the results have been discussed in terms of molecular scale model.