Table 3.

Thermodynamic criterions for C-steel dissolution in 1.0 M HCl at several doses of inhibitors calculated from WL assessments.

Inhibitor	Conc., M	Ea* kJ mol−1	∆H* kJ mol−1	− ∆S* J mol−1 K−1
MA-1440	5 × 10−6	45.37	42.74	151.34
	10 × 10−6	43.69	41.07	157.83
	15 × 10−6	41.23	38.61	166.94
	20 × 10−6	38.09	35.47	178.38
	25 × 10−6	33.93	31.31	193.20
	30 × 10−6	28.46	25.84	212.19
MA-1456	5 × 10−6	42.84	39.67	159.51
	10 × 10−6	41.59	38.20	165.16
	15 × 10−6	40.27	36.78	170.68
	20 × 10−6	38.72	35.39	176.17
	25 × 10−6	36.92	33.49	183.27
	30 × 10−6	34.87	31.76	189.85