Complexation Equilibria of Silver(I) Ions with N-Phenylthiourea in Aqueous Solutions
| Autor: | A. S. Samadov, I. V. Mironov, I. G. Gorichev, A. F. Stepnova |
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| Rok vydání: | 2020 |
| Předmět: |
Aqueous solution
Chemistry Materials Science (miscellaneous) Potentiometric titration 010402 general chemistry 010403 inorganic & nuclear chemistry 01 natural sciences 0104 chemical sciences Ion Inorganic Chemistry Silver electrode Crystallography Ionic strength Content (measure theory) Physical and Theoretical Chemistry |
| Zdroj: | Russian Journal of Inorganic Chemistry. 65:1081-1084 |
| ISSN: | 1531-8613 0036-0236 |
| Popis: | Complexation between silver(I) ions and N-phenylthiourea is studied over a wide range of silver(I) and N-phenylthiourea (L) concentrations at 25.0°C and ionic strength I = 0.11 M (0.01 M HNO3 + 0.1 M NaNO3) by potentiometric titration using a silver electrode. Mono- and binuclear complexes are present in the studied concentration range of Ag+ ions (1 × 10–5–1 × 10–3 mol/L). $${\text{A}}{{{\text{g}}}_{{\text{2}}}}{\text{L}}_{3}^{{2 + }}$$ is the dominant species. At CL/CAg > 1, the content of mononuclear species is much lower than that of binuclear ones. The calculated overall stability constants of the complexes are as follows: log β11 = 5.58, log β12 = 10.75, log β21 = 10.1, log β22 = 17.1, log β23 = 23.2, log β24 = 25.9, and log β25 = 29.2. |
| Databáze: | OpenAIRE |
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