Spectrophotometric investigations of the reaction between gold(III) and potassium iodide
oleh: GORDANA MILOVANOVIC, BOJAN RADAK, MIRA CAKAR, SUZANA PREMOVIC, VESNA VASIC
| Format: | Article |
|---|---|
| Diterbitkan: | Serbian Chemical Society 2000-06-01 |
Deskripsi
The equilibria of the complex formation between AuCl4-n(OH)n- and I- was studied spectrophotometrically in aqueous solutions containing KI:Au(III)<2 in the acidity range from 1 M HCl to pH 7 at 25°C. From the hydrogen ion and Cl- ion dependence of the absorption spectra, it was found that AuCl2I2- and Au(OH)2I2- complexes were formed. The equilibrium constants of complex formation were determined.