Citation:
Xie En-Hai, Meng Qing-Shui, Wang Zhi-Pu. Kinetics of Oxidation of Sodium Tartrate by Ni(IV) Periodate Complex in Aqueous Alkaline Medium[J]. Acta Physico-Chimica Sinica,
;1992, 8(04): 500-504.
doi:
10.3866/PKU.WHXB19920414
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The kinetics and mechanism of electron transfer from sodium tartrate to Ni(Ⅳ) periodate complex have been studied in aqueous alkaline medium using spectroscopic and stopped-flow method. The kinetics exhibits a pseudo first order for the disap-pearance of Ni(Ⅳ) periodate complex when substrate is present in excess. The order for the substrate found is not an integer. Additon of NaIO_4 and NaOH affects the reaction rates. Results are interpreted in terms of a mechanism involving two separated steps of one-electron transfer from the substrate to the species containing Ni(IV). The activation parameters of this reaction have been calculated.
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