Abstract
The electrolytic conductivity of the tetraalkylammonium iodides, R 4NI (R = butyl to heptyl), has been studied in (0.00, 0.25, 0.50 and 0.75) mass fraction of o-toluidine (C 7H 9N) in n-hexanol (C 6H 14O) at T = 298.15 K. The limiting molar conductance Λ 0, association constants K A and the co-sphere diameter R for ion-pair formation in 0.00 and 0.25 mass fraction of solvent mixture have been evaluated using the Fuoss-equation. However, the deviation of the conductometric curves ( Λ versus c 1/2) from linearity for the electrolytes at 0.50 and 0.75 mass fraction of o-toluidine (C 7H 9N) in n-hexanol (C 6H 14O) indicates triple ion formation, and therefore the corresponding conductance data have been analyzed by the Fuoss–Kraus theory of triple ions. The observed values of the molar conductivity are explained by the ion-pairs (M + + X − ↔ MX) and triple-ions ( 2 M + + X - ↔ M 2 X + , M + + 2 X - ↔ MX 2 - ) formation. From the investigations, the following trend in conductance of the solvated salts has been observed: [Display omitted]
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