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Table 3 Kinetic parameters for the corrosion of mild steel in 1N HCl, H2SO4, and HNO3 medium containing various concentrations of guar gum at 304 K

From: Anticorrosive efficacy and adsorptive study of guar gum with mild steel in acidic medium

1N HCl

Cont. (ppm)

B

K

R2

1N H2SO4

B

K

R2

1N HNO3

B

K

R2

0

−0.35

1.1

0.96

−0.36

0.92

0.93

−0.02

0.01

0.70

250

−0.27

1.6

0.99

−0.44

1.7

0.98

−0.14

0.64

0.90

500

−0.25

1.6

0.97

−0.44

1.74

0.98

−0.15

0.57

0.89

750

−0.25

1.65

0.99

−0.44

1.85

0.98

−0.12

0.44

0.76

1000

−0.19

1.56

0.99

−0.41

1.86

0.96

−0.11

0.4

0.74

313 K

1N HCl

0

−0.34

1.05

0.96

1N H2SO4

−0.35

0.87

0.94

1N HNO3

−0.02

0.03

0.93

250

−0.26

1.54

0.99

−0.43

1.61

0.97

−0.13

0.59

0.92

500

−0.22

1.52

0.98

−0.42

1.64

0.98

−0.14

0.53

0.87

750

−0.24

1.54

0.98

−0.43

1.75

0.94

−0.11

0.39

0.74

1000

−0.2

1.52

0.99

−0.44

1.8

0.97

−0.1

0.36

0.71