Table 10 Optimal thermodynamic parameters (∆Hoc, ∆Soc and τ0), from linear and nonlinear regression of Eqs. 41 and 43.

From: Effect of acid proticity on the thermodynamic parameters of charge transfer resistance in corrosion and passivation of nickel based glass alloy

Acid

∆Hoc

∆Soc

τ0

τ0

R-square

 

kJ  mol−1

J  K−1  mol−1

K

°C

–

Both acids*

76.301

250.618

304.45

31.30

0.99971

HCl

84.269

262.947

320.48

47.33

0.99929

H2SO4

86.414

269.635

320.49

47.34

0.99931

H3PO4

86.028

268.711

320.15

47.00

0.99826

Both acids**

80.902

259.676

311.55

38.40

0.99899

  1. *Fit in linear regression for thermodynamic parameters as independent of temperature.
  2. **Fit in nonlinear regression for thermodynamic parameters dependent on temperature.
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