Kinetics of Zinc Dissolution in Nitric Acid, Acetic Acid and Chlorosubstituted Acetic Acids by Conductometric Method

S. A. Khalil and M. B. Omar

Department of Chemistry, Faculty of Science. Al-Fateh University £ P. O. Box 13585 - Tripoli (Libya)

ABSTRACT:

The kinetics of zinc dissolution in dilute (0.1 M) nitric/acetic and chloroacetic acids has been studied over the temperature range : 20°- 35°C by measuring the conductivity. The metal dissolution process were found to be first-order with respect to the acid concentration. The calculated activation energies indicate the control of the dissolution process by diffusion. The substituent chlorine atoms in acetic acid molecule lower the dissolution activation energy and increase the rate of metal dissolution. Weight loss measurements were made for zinc dissolution in acetic acid and chloroacetic acids at 25°C.

KEYWORDS:

dissolution; nitric/acetic; substituent

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Copy the following to cite this article: Khalil C. S. A, Omar M. B. Kinetics of Zinc Dissolution in Nitric Acid, Acetic Acid and Chlorosubstituted Acetic Acids by Conductometric Method. Orient J Chem 1997;13(3).

Copy the following to cite this URL: Khalil C. S. A, Omar M. B. Kinetics of Zinc Dissolution in Nitric Acid, Acetic Acid and Chlorosubstituted Acetic Acids by Conductometric Method. Orient J Chem 1997;13(3). Available from:http://www.orientjchem.org/?p=37498