Ion-Pair and Triple-Ion Formation of Ammonium Iodide and Potassium Iodide Salts in Two Different Organic Solvents at 298.15 K

N. Mohondas Singh

Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl-796004, India

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In present work, the ion pair and triple ion formation of ammonium iodide (NH4I) and potassium iodide (KI) have been studied at 298.15 K. The work has been done using the two different solvents viz. o-xylene and o-toluidine. The limiting molar conductance (Λo), limiting molar conductance of triple ion (ΛoT) at infinite dilution in the pure solvent, association constant (Kp) and triple ion constant (KT) at a particular temperature was studied by using the Fuoss-Kraus technique for the chosen salts. At smaller concentrations, ion pair concentration (CP), triple ion concentration (CT), ion-pair fraction (α) and triple ion fraction (αT), respectively were examined by using Kp, KT and to compare Kps as well as KTs values for the chosen salts.


Ammonium iodide, Potassium iodide, Association constant, Triple ion constant, Fuoss-Krauss technique.

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