Concentration of inhibtor (moldm−3) in 1.0 M HCl | Activation energy of Adsorption | Heat of Adsorption | Enthalpy of adsorption and Entropy of Adsorption | Gibbs Free Energy of Adsorption | |||||
Eads (kJ) | R2 | Qads (kJ) | R2 | ∆Hads (kJ) | ∆Sads (JK−1) | R2 | ∆Gads (kJ) | R2 | |
Blank | 82.96 | 0.962 | 80.40 | −0.57 | 0.959 | ||||
0.01 | 91.66 | 0.962 | −50.76 | 0.985 | 89.10 | −0.19 | 0.960 | −51 | 0.984 |
0.03 | 98.28 | 0.956 | −42.23 | 0.935 | 95.72 | 0.94 | 0.953 | −42.23 | 0.935 |
0.05 | 126.82 | 0.965 | −88.74 | 0.991 | 124.3 | 1.4 | 0.964 | −88.74 | 0.991 |
0.07 | 162.52 | 0.917 | −108.12 | 0.875 | 160.00 | 3.01 | 0.914 | −108.12 | 0.875 |