Inhibition Effect of Miconazole Nitrate on the Corrosion of Mild Steel in Hydrochloric Acid Medium

Table 4

Values of activation parameters for mild steel in 1 M HCl in the absence and presence of different concentrations of the inhibitor.

(inhibitor)/ppm	𝐸^∘𝑎 (kJ mol−1)	Δ𝐻^∘𝑎 (kJ mol−1)	Δ𝑆^∘𝑎 (J mol−1)
0	36.72	34.08	−127.57
10	34.86	32.22	−148.76
50	33.25	30.61	−156.95
100	26.21	23.57	−186.19
200	21.29	18.65	−207.88