Table 2: Thermodynamic parameters of corrosion of CS in 1 M HCl with and without the inhibitor A9Y5GPA.

(mM) (kJ mol−1) Δ (kJ mol−1)Δ (J mol−1 K−1)

Blank47.73 45.09−80.44
0.269.89 67.24−12.68
0.478.90 76.2415.47
0.681.29 78.6321.64
0.887.31 84.6439.83
1.091.02 88.3650.95