Hydrolytic equilibria of metallic ions : II. The hydrolysis of Fe(II) ion in NaClO<sub>4</sub> solutions

The acidic ionization (hydrolysis) constant of ferrous ion has been measured in the range of temperature between 20 and 40°C and of ferrous ion concentration between 0·0016 and 0·062 M, in 0·5 to 2 M sodium perchlorate solution, according to the theory of the constant ionic medium. The value of pKa′...

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Detalles Bibliográficos
Autores principales: Bolzán, J. A., Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1963
Materias:
Ciencias Exactas
Química
Hydrolysis
Ferrous ion
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/121247
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-121247
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Hydrolysis
Ferrous ion
spellingShingle Ciencias Exactas
Química
Hydrolysis
Ferrous ion
Bolzán, J. A.
Arvia, Alejandro Jorge
Hydrolytic equilibria of metallic ions : II. The hydrolysis of Fe(II) ion in NaClO<sub>4</sub> solutions
topic_facet Ciencias Exactas
Química
Hydrolysis
Ferrous ion
description The acidic ionization (hydrolysis) constant of ferrous ion has been measured in the range of temperature between 20 and 40°C and of ferrous ion concentration between 0·0016 and 0·062 M, in 0·5 to 2 M sodium perchlorate solution, according to the theory of the constant ionic medium. The value of pKa′ obtained at 25°C is 6·74 ± 0·06. Within experimental error Ka′ is independent of the ferrous ion and sodium perchlorate concentrations. The temperature dependence of Ka′ is expressed by pKa′=2625T-2-037. The increase of enthalpy and free energy of the hydrolysis reaction are: ΔH<sub>298°</sub> = 12,000 ± 1,000 cal/mol; ΔG<sub>298°</sub> = 9,165 ± 100 cal/mol. The information has been used to draw conclusions on the character of the ferrous ion in aqueous solution; on its amphoteric nature; and for checking the solubility data of ferrous hydroxide.
format Articulo
Articulo
author Bolzán, J. A.
Arvia, Alejandro Jorge
author_facet Bolzán, J. A.
Arvia, Alejandro Jorge
author_sort Bolzán, J. A.
title Hydrolytic equilibria of metallic ions : II. The hydrolysis of Fe(II) ion in NaClO<sub>4</sub> solutions
title_short Hydrolytic equilibria of metallic ions : II. The hydrolysis of Fe(II) ion in NaClO<sub>4</sub> solutions
title_full Hydrolytic equilibria of metallic ions : II. The hydrolysis of Fe(II) ion in NaClO<sub>4</sub> solutions
title_fullStr Hydrolytic equilibria of metallic ions : II. The hydrolysis of Fe(II) ion in NaClO<sub>4</sub> solutions
title_full_unstemmed Hydrolytic equilibria of metallic ions : II. The hydrolysis of Fe(II) ion in NaClO<sub>4</sub> solutions
title_sort hydrolytic equilibria of metallic ions : ii. the hydrolysis of fe(ii) ion in naclo<sub>4</sub> solutions
publishDate 1963
url http://sedici.unlp.edu.ar/handle/10915/121247
work_keys_str_mv AT bolzanja hydrolyticequilibriaofmetallicionsiithehydrolysisoffeiiioninnaclosub4subsolutions
AT arviaalejandrojorge hydrolyticequilibriaofmetallicionsiithehydrolysisoffeiiioninnaclosub4subsolutions
bdutipo_str Repositorios
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