“…As a result of the effective and spontaneous adsorption of the MBZ molecules to the surface of mild steel in H 2 SO 4 , K ads values were high and negative values were obtained for Δ G ads ° Through the magnitude of Δ G ads °, the adsorptive nature was determined. However, for physical adsorption mechanism, values of about −20 kJ· mol −1 and less are associated, while values of −40 kJ· mol −1 and above are usually considered to be chemisorption [ 13 , 24 , 28 , 30 ]. The results in Table 5 revealed that the computed values of Δ G ads ° for the inhibitor ranged between −17.76 to −21.48 kJ·mol −1 and −11.33 to −15.25 kJ·mol −1 at 303 K and 333 K, respectively.…”