Thermodynamic and Kinetic Study for the Interaction of Ascorbic Acid with Nickel (II) Ion by Spectrophotometric Methods

The aim of this paper was study the interaction between ascorbic acid with Nickel (II) bythe application of UV-Visible spectroscopic method at four different temperatures (293, 298, 303, 308) K. Thechange in absorbency improve the complexion between acid and metal ion. Thestoichiometry of the interaction wasdetermining by continuous variationsmethods. Thethermodynamic parameters (G, H andS) and equilibrium constantwere calculated at four different temperaturesrefer to the hydrophobic interaction between metal and acid. Thekinetic studies for this interaction follows second order equation with rate constant value of 210-3 M -1min-1