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Spectrophotometric investigations of the reaction between gold(III) and potassium iodide

Spektrofotometrijsko ispitivanje reakcije zlata(III) sa kalijum-jodidom

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Authors
Vasić, Vesna
Premović, Suzana
Čakar, Mira
Radak, Bojan B.
Milovanović, Gordana A.
Article (Published version)
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Abstract
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 ºC. 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.
Ravnoteže obrazovanja kompleksa između AuCl4-n(OH)n i KI ispitivane su spektrofotometrijski u vodenim rastvorima pri odnosu koncentracija KI:Au(III) ≤ 2 u oblasti kiselosti od 1 M HCl do pH 7 na 25 ºC. Iz promene apsorpcionih spektara u zavisnosti od kiselosti sredine i koncentracije Cl- jona nađeno je da se obrazuju kompleksi AuCl2I2- i Au(OH)2I2-. Određene su konstante ravnoteže odgovarajućih reakcija. PR Projekat Ministarstva nauke Republike Srbije.
Keywords:
Au(III) / iodine / complexes / aqueous solutions
Source:
Journal of the Serbian Chemical Society, 2000, 65, 5-6, 345-352
Publisher:
  • Srpsko hemijsko društvo, Beograd

ISSN: 0352-5139

WoS: 000087397100010

Scopus: 2-s2.0-0034345153
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URI
http://farfar.pharmacy.bg.ac.rs/handle/123456789/257
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Pharmacy

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