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Isotope exchange of iodine in iodide-iodate melts studied by radio paper chromatography

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Abstract

The isotopic exchange reaction of iodine in fused NaI−NaIO3 and KI−KIO3 systems, which does not proceed until the mixture is melted, is found to be almost instantaneous in homogeneous melts. The equilibrium is attained within a period of less than 5 min at a temperature 5°C above the melting temperature of each composition for both systems. No noticeable exchange is observed even after heating the samples for 30 min at a temperature 20°C below the corresponding melting point. A single-step bimolecular association-dissociation mechanism is proposed for the exchange.

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Author notes

  1. R. Tripathi

    Present address: Department of Chemistry, Faculty of Science, Benaras Hindu University, 221 005, Varanasi, India

Authors and Affiliations

  1. Nuclear and Radiochemistry Laboratory, Department of Chemistry, Faculty of Science, Banaras Hindu University, 221 005, Varanasi, (India)

    K. D. Ram & R. Tripathi

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  1. K. D. Ram
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Ram, K.D., Tripathi, R. Isotope exchange of iodine in iodide-iodate melts studied by radio paper chromatography. Journal of Radioanalytical and Nuclear Chemistry, Articles 139, 347–353 (1990). https://doi.org/10.1007/BF02061821

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  • DOI: https://doi.org/10.1007/BF02061821

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