Conductometric Studies and Thermodynamic Behaviour of Neodymium Soaps in 60/40 Benzene-dimethylsulphoxide Mixture (V/V)

Author(s): Chhaya Chauhan and S. K. Upadhyaya

Conductometric measurements of the solution of Neodymium Caprylate and Laurate in 60/40 ben-zene-dimethylsulphoxide (V/V) mixture were employed to determine the critical micellar concentration (CMC), limiting molar conductance at infinite dilution, degree of dissociation and dissociation constant .The values of CMC decreases with increasing chain length of fatty acid component of soaps .The results shows that these soaps behaves as a weak electrolyte in dilute solutions below the CMC and Debye-Huckel-Onsager equation is not applicable to these soap solutions. The thermodynamic parameters indicate that the micellization process is favoured over the dissociation process


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