Saber UCV
Repositorio Institucional
Repositorio Institucional
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https://saber.ucv.ve/handle/10872/10189
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| Title: | Estudio de la hidrólisis del ion Niquel(II) y de la formación de los complejos de Niquel(II) con los ácidos Picolínico y Dipicolínico en NaCl 1,0 mol.dm-3 a 25°C |
| Authors: | Veliz, Luís Martínez, José Daniel Araujo, Mary Lorena Brito, Felipe Lubes, Giuseppe Rodríguez, Mildred Lubes, Vito |
| Keywords: | hidrólisis del Níquel (II); complejos de Niquel(II); equilibrios solución; estudios potenciométricos constantes de estabilidad especiación. |
| Issue Date: | 19-Jun-2015 |
| Abstract: | The hydrolysis products (hidroxylated complexes) of Nickel(II) ion and the complex species formed in aqueous solution (25oC, I = 1.0 mol.dm−3 NaCl ionic medium) between Ni(II) cation and the ligands: picolinic acid (Hpic) and dipicolinic acid (H2dipic), have been studied potentiometrically. In the application of the least-squares computer program, LETAGROP, to the experimental emf(H) data, were observed the formation of the hydrolysis products [Ni(OH)]+, [Ni(OH)2] and [Ni4(OH)4]4-. Additionally, were detected the formation of the complexes [Ni(pic)]+, [Ni(pic)2] and [Ni(pic)3]- with picolinic acid and the species [Ni(dipic)] and [Ni(dipic)2]2- with dipicolinic acid. The stability constants of the complexes formed were determined by potentiometric measurements. |
| URI: | http://hdl.handle.net/10872/10189 |
| ISSN: | 1856-5301 |
| Appears in Collections: | Artículos Publicados |
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