Inhibition of Mild Steel Corrosion in 1M Hydrochloric Medium by the Methanolic Extract of Ammi visnaga L. Lam Seeds

Table 5

Impedance parameters for corrosion of carbon steel in 1.0 M HCl in the absence and presence of different concentrations of EMG at 303 K.

Inhibitor	Conc (g/L)	(Ω cm^2)		(μs^nΩ^−1 cm^−2)	(μF cm^−2)	%
Blank	-	29.35	0.91	176.10	91.63	-
EMG	0.2	62.46	0.88	152.94	81.11	53
	0.4	83.87	0.87	146.45	75.89	65
	0.6	104.83	0.85	129.65	60.72	72
	1	183.45	0.87	66.95	34.69	84