Interesting Behavior of Pachycormus discolor Leaves Ethanol Extract as a Corrosion Inhibitor of Carbon Steel in 1 M HCl: A Preliminary Study

Table 6

Thermodynamic adsorption parameters for EEPD on carbon steel 1018 in 1 M HCl at different temperatures.

Thermodynamics adsorption parameters
T (°C)	Δ𝐺 (kJ mol^−1)	Δ𝐻 (kJ mol^−1)		Δ𝑆 (kJ mol^−1)
23	−10.8896	−36.649		−0.1595
40	−9.5931	−36.649	−14.576	−0.1477	−0.07722
60	−9.2747	−14.576	7.6593	−0.0716	−0.00485
75	−10.0375	7.6593		−0.0068