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Table 4 Activation parameters for carbon steel corrosion in the absence and presence of various concentrations of diolefinic dye in 1 M HCl

From: Synergistic inhibition effect of diolefinic dye and silver nanoparticles for carbon steel corrosion in hydrochloric acid solution

Concentration M

Ea*

kJmol−1

ΔH*

kJ mol−1

Δs*

J mol−1

Blank

49.7

20.4

− 0.12

1 × 10–6

44.6

18.2

− 0.14

5 × 10–6

45.1

18.4

− 0.14

1 × 10–5

29.8

11.8

− 0.19

5 × 10–5

20.1

7.6

− 0.22

1 × 10–4

12.9

4.4

− 0.25

  1. Asterisk means activation
  2. Ea* is the activation energy
  3. ΔH* is the activation enthalpy
  4. Δs* is activation entropy
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BMC Chemistry

ISSN: 2661-801X

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