Table 3 Thermodynamic criterions for C-steel dissolution in 1.0 M HCl at several doses of inhibitors calculated from WL assessments.

From: Experimental and computational approaches of methoxy naphthylbithiophene derivatives and their use as corrosion protection for carbon steel in acidic medium

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

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