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Interaction of Cobalt ( II ) and Nickel ( II ) ions with Amino acids in Aqueous solution : A Spectrophotometric Study
| Content Provider | Semantic Scholar |
|---|---|
| Author | Boruah, Devajani |
| Copyright Year | 2012 |
| Abstract | The interactions of transition metals cobalt(II) and nickel(II) ions with the amino acids L-threonine(L-thr), Lproline(L-pro) and L-lysine(L-lys) in aqueous solution have been studied by using visible spectroscopic method. On addition of amino acids to the aqueous solution of the metal ions, a change in the visible spectra is observed due to the replacement of the water molecules from the coordination sphere of the aquocomplex [M(H2O)6] 2+ by the amino acid molecules. [M(H2O)6] 2+ + L = [M(H2O)5L] 2+ + H2O (where M = Co(II) and Ni(II); L = L-thr, L-pro and L-lys). The equilibrium constants and the change of Gibbs free energy ∆G o of the water exchange process at room temperature have been determined. For Ni(II)-H2O-amino acid systems the equilibrium constants have been determined for five variable temperatures (318-298 K) and the corresponding thermodynamic parameters ∆G o , ∆H o and ∆S o have been calculated. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.ijsrp.org/research-paper-0812/ijsrp-p0817.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
