Kinetics of the thermal and photochemical decomposition of aquapentacyanoferrate(III) in aqueous solution
The kinetics of the thermal and photochemical decomposition of aquapentacyanoferrate(III) ion in aqueous solution in the presence ofo-phenanthroline was studied spectrophotometrically. The first-order rate constant (k; ϑ) at 30° C [I=1 M(NaCl)] for the thermal reaction is (1.49±0.13)×10−6 s−1 with Δ...
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| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1987
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/139677 |
| Aporte de: |
| Sumario: | The kinetics of the thermal and photochemical decomposition of aquapentacyanoferrate(III) ion in aqueous solution in the presence ofo-phenanthroline was studied spectrophotometrically. The first-order rate constant (k; ϑ) at 30° C [I=1 M(NaCl)] for the thermal reaction is (1.49±0.13)×10−6 s−1 with ΔH; ≠=(158±7)kJ mol−1 and ΔS≠=(42±4) JK−1 mol−1. The initial quantum yield for the photochemical reaction at pH=7 is independent of the light intensity and is (1.49±0.33)×10−2 mol einstein−1. |
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