Research Article
Corrosion Inhibition of Mild Steel in Acidic Media by 5′-Phenyl-2′,4′-dihydrospiro[indole-3,3′-pyrazol]-2(1H)-one
Figure 3
Free energy of adsorption of SPAH in in 1 M HCl and 0.5 M H2SO4 in the presence of SPAH 1 M HCl and 0.5 M H2SO4.