Inhibition of Mild Steel Corrosion by 3-Benzoylmethyl Benzimidazolium Hexafluoroantimonate in Acidic Solution

Table 4

The activation energy (𝐸_𝑎) for the corrosion of mild steel in 1.0 M HCl with and without 3-benzoylmethyl benzimidazolium hexafluoroantimonate inhibitor at various concentrations.

System	Activation energy, 𝐸𝑎 (kcal·mol^−1)
	5×10^−4 M	5×10^−5 M	5×10^−6 M	5×10^−7 M
1 M HCl	18.27	18.27	18.27	18.27
1 M HCl + BMBI	33.06	26.43	23.35	22.31