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Asian Journal of Research in Chemistry
Year : 2016, Volume : 9, Issue : 7
First page : ( 329) Last page : ( 334)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2016.00049.3

Synergistic Effect of Cl, Brand Ion the Corrosion Inhibition of Mild Steel in H2SO4 by a Resorcinol: Kinetics and Thermodynamic Studies

Kushwah Rupesh1,*, Pathak R.K.2

1Department of Chemistry, Govt. Polytechnic College, Dhar, M.P., India

2Department of Chemistry, Govt. M.L.B. College, Indore, M.P., India

*Corresponding Author E-mail: rupeshkushwah151281@gmail.com

Online published on 18 October, 2016.

Abstract

The synergistic effect between resorcinol and halides on the corrosion of mild steel in 0.5 M H2SO4 solution at 298K is done by mass loss method. Experimental results revealed the pointing synergistic activity of halides on the protective effect of resorcinol. The effect of halides on the inhibition efficiency obey the trend: Cl< Br< I. This trend shows that the radii and electronegativity of the halide play a predominant role in the adsorption process. In contrary the synergism obey the opposite order due to the effective inhibition efficiency of iodide. The adsorption of the resorcinol follows the Langmuir adsorption isotherm. Some kinetic and thermodynamic parameters also calculated and discussed.

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Keywords

Acidic solution, corrosion inhibitor, resorcinol, synergism.

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