Conductance and Solvation Behavior of Quinolinium Dichromate in Binary Mixtures of Water with N,N-Dimethyl Formamide

• Published in: Journal of chemical and engineering data Vol. 53; no. 12; pp. 2766 - 2769
• Main Authors: Radhika, V, Manikyamba, P
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 11.12.2008
• Subjects: Chemistry; Exact sciences and technology; General and physical chemistry; Solutions; Solvation. Solvent properties; Organic cation; Mixed solvent; Solvation; Electrical properties; Electrolyte solution; N,N-Dimethylformamide; Ionic conductivity; Chromium VI Compounds; Dichromates; Hydroorganic solvent; Mixture
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je800328q

Conductance of quinolinium dichromate has been measured in water and N,N-dimethyl formamide mixtures over the complete compositional range. The limiting molar conductance Λo and the association constant of the ion pair, K A, have been computed using the Shedlovsky equation. Λo increases with an increase in the proportion of water in the solvent mixture. The Kraus−Bray equation has also been used to correlate the limiting molar conductance data, and the dissociation constant of the ion pair, K C, has been computed. The results have been discussed in terms of ion−solvent interactions.