Molecular Thermodynamics for the Redox Reaction of Sodium Tetrachloroaurate, NaAuCl4 (Noble Material) with Giemsa Stain (GS) Dye in HNO3 Solution Using Cyclic Voltammetry | ||||
| Egyptian Journal of Chemistry | ||||
| Article 11, Volume 66, Issue 6, June 2023, Page 101-108 PDF (899.44 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2022.151756.6572 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Marwa Sultan Sultan  ; M.M. El-Defrawy; Essam A. Gomaa
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| Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt. | ||||
| Abstract | ||||
| The importance of this investigation is to try to form a complex between gold tetraurate and Giemsa Stain dye to help researchers in the field of ore dressing of gold in the industry. The cyclic voltammetry of sodium tetrachloroaurate, NaAuCl4 was studied in 0.1 M/L HNO3 at 299.55K using a glassy carbon electrode. The effects of various scan rates were studied in this medium. Cyclic voltammetry was also done for sodium tetrachloroaurate in the presence of Giemsa Stain dye, and further scan rate effects were discussed. The molecular thermodynamics data like stability constants and Gibbs free energies of complexation resulting from the interaction of sodium tetrachloroaurate, NaAuCl4 with Giemsa Stain (GS) dye were evaluated and found to be complexation reactions. | ||||
| Keywords | ||||
| Electron transfer rate constant; Stability constant; Gibbs free energy of complexation; Charge transfer coefficient; Diffusion coefficient | ||||
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