الفهرس 
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Abstract
The values of thermodynamics parameters ΔH* (kJmol-1), ΔS* (J.mol-1 k-1) and ΔG kJmol-1) are represented. The results show positive sign for ΔH*, reflecting the endothermic nature of the adsorption process. The negative values of ΔS* pointed to greater order produced during the process of activation indicating more ordered and nor random distribution of ions. ΔG* values show limited increase with rise in the concentration of organic additives i.e.: ΔG* values of inhibited systems were more positive than that for the uninhibited systems. The isokinetic temperature β were estimate, their values are much higher than that of the experimental temperature 298K indicating that the rate of the reaction is enthalpy controlled, if their values are lower than 298 K indicating that the rate of the reaction is entropy controlled.