Abstract
The study in volve the temperature effect on the extraction process for some chelate systems through study of extraction of Cd (II) by 2- mercaptobenzothiazole. The work include the calculations of thermodynamics parameters (_Hex, _Gex , _Sex) for the extraction processes to Cd (II). The results were indicated that _Hex has a negative value (exothermic process). The obtained negative values of _G ex indicated to the spontaneous extraction processes. The results were shown that D values decrease with increase of temperature while D increase with increase of ethanol concentration as catalyst. Mole ratio method was employed for expected determination of the stoichiometry of the complex. The results showed that the ratio of Cd (II) to the reagent is ( 1 : 2) respectively.
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