Table 5: Electrochemical impedance parameters for mild steel in 1 M H2SO4 containing different concentrations of esomeprazole with the addition of KI.

Inhibitor concentration
(ppm)
(  cm2) (μF cm−2)I.E  (%)

Blank13.671656.9
5044.746153.869.45
10048.623134.5871.89
15053.798110.9374.59
20056.9096.8675.98
25059.58287.1877.06
30066.29171.7779.38
25 ppm KI68.49966.680.04
50 ppm KI86.56741.8384.21