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

Authors

Hüseyin TOPALLAR
Yüksel BAYRAK
Mehmet İŞCAN

DOI

-

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.

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