Table 6 The activation thermodynamic parameters in the presence and absence of DAMP.

From: Chemical, electrochemical, and quantum investigation into the use of an organophosphorus derivative to inhibit copper corrosion in acidic environments

Solution

Ea (KJ/mol)

ΔH* (KJ/mol)

ΔS* J mol-1 K-1

Blank (HCl)

23.84

23.07

−5.95

DAMP + HCl

35.06

34.23

93.42

Blank (H2SO4)

21.98

21.21

−25.9

DAMP + H2SO4

33.09

32.31

74.01

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