Thermodynamics of Dissociation of Strontium, Barium and Nickel Caproates in Water

Authors

Hüseyin TOPALLAR
Yüksel BAYRAK
Mehmet İŞCAN

Abstract

The critical micellar concentration (CMC) and thermodynamic parameters (heat \DeltaH_d, free energy \DeltaG_d, and entropy \DeltaS_d, of dissociation) of aqueous solutions of strontium, barium and nickel caproates were determined by conductivity measurements. A Kraus and Bray-type expression was used to evaluate molecular conductance at infinite dilution and theromdynamic parameters. The results confirm that CMC remains unaffected by temperature in the range of 25-55^{\circ}C, and show that the dissociation of soaps is an exothermic reaction and nonspontaneous.

DOI

-

Keywords

Critical micellar concentration, conductance, dissociation, barium, nickel and strontium caproate, thermodynamics.

First Page

195

Last Page

199

Recommended Citation

TOPALLAR, Hüseyin; BAYRAK, Yüksel; and İŞCAN, Mehmet (1997) "Thermodynamics of Dissociation of Strontium, Barium and Nickel Caproates in Water," Turkish Journal of Chemistry: Vol. 21: No. 3, Article 7. Available at: https://journals.tubitak.gov.tr/chem/vol21/iss3/7