Inhibition efficiency turned negative at the fourth concentration, what is responsible ?

Olanrewaju Moses Adesusi @Olanrewaju_Adesusi5

04 April 2018 0 9K Report

I have a concern with regards to potentiodynamic polarization test carried out where the oil sample (inhibitor) concentration was varied as 1g, 2g, 3g and 4g in 0.5M of H2SO4 environment. The inhibition efficiency of 4g turned negative while the others were positive. What could be responsible? Anyone with explanation should please shed more light.

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