Lal, B. B. (1952) Photochemical after-effect in H2O2-K4Fe(CN)6 reaction Proceedings of the Indian Academy of Sciences, Section A, 36 (4). pp. 244-257. ISSN 0370-0089
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Official URL: http://www.ias.ac.in/j_archive/proca/36/4/244-257/...
Related URL: http://dx.doi.org/10.1007/BF03172233
Abstract
The dark reaction between hydrogen peroxide and a pure dilute aqueous solution of potassium ferrocyanide has been critically examined. The experiments described in the paper lead to the conclusion that potassium aquopentacyanoferrite produced as a substitution product in very minute concentration in aqueous ferrocyanide in the dark reacts with hydrogen peroxide resulting in the measured dark reaction. Aged solutions of ferrocyanide, as well as pre-heated and pre-illuminated solutions used sometime after treatment show a distinctly lower rate of peroxide decomposition. This diminished reactivity towards hydrogen peroxide appears to be due to the partial decomposition of the aquo-complex salt by heat, prolonged exposure to light and ageing. The marked photochemical after-effect observed in the pre-insolated mixture of hydrogen peroxide and potassium ferrocyanide has been studied in detail with varying periods of pre-illumination of the reaction mixture. It is found that the greater the period of pre-illumination of the mixture, the greater is the photochemical after-effect within the concentration limits of reactants used in the experiments.
Item Type: | Article |
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Source: | Copyright of this article belongs to Indian Academy of Sciences. |
ID Code: | 34882 |
Deposited On: | 12 Apr 2011 04:38 |
Last Modified: | 17 May 2016 17:46 |
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