Table 5.

Thermodynamic parameters for the adsorption of inhibitor compounds in 1 M HCl on carbon steel surface.

Inhibitor	T(K)	Slope	Intercept	R2	Kads M–1	ΔGoads kJ/mol	ΔSoads J/mol.K	ΔHoads kJ/mol
DHSiMF	303	1.13430	0.00002	0.9999	49,881	− 37.37	12.55	− 7.90
	313	1.27428	0.00002	0.9999	52,769	− 37.51	12.15
	323	1.45333	0.00002	0.9999	42,148	− 36.94	10.91
	333	1.70702	0.00003	0.9999	39,165	− 36.76	9.23
DHSiB	303	1.17786	0.00004	0.99983	23,971	− 35.52	84.76	− 11.07
	313	1.26304	0.00005	0.99977	20,102	− 35.08	82.66
	323	1.48153	0.00005	0.99990	19,800	− 35.04	81.65
	333	1.72407	0.00006	0.99988	15,495	− 34.42	82.74