Anticorrosion Activity of 8-Quinoline Sulphonyl Chloride on Mild Steel in 1 M HCl Solution

Table 2

Electrochemical impedance spectroscopy parameters values for mild steel in 1 M HCl solution containing various concentrations of inhibitor.

Conc. of QSC (ppm)	(cm^2)	(cm^2)	(μF cm^−2)	Surface coverage (θ)	IE (%) η
Blank (1 M HCl)	5.211	10.450	2924.17	—	—
50	11.682	23.436	581.62	0.5541	55.41
100	12.517	25.207	504.68	0.5854	58.54
150	15.179	30.785	340.77	0.6605	66.05
200	16.352	32.966	295.40	0.6830	68.30
250	18.678	37.669	226.32	0.7226	72.26
300	20.178	40.467	195.01	0.7418	74.18