Natural Polymer of Iraqi Apricot Tree Gum as a Novel Corrosion Inhibitor for Mild Steel in 1 M HCl Solution

Table 4

The activation energy (KJ/mol), enthalpy (KJ/mol), and entropy (J/mol·K) of mild steel corrosion in 1 M HCl with GA inhibitor.

System/concentration	(KJ/mol)	(KJ/mol)	(J/mol·K)
Blank	67.286	64.783
0.1 g/L	44.094	41.591
0.2 g/L	45.218	42.716
0.3 g/L	38.042	35.538