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Cerimetric estimation of hypophosphite: Silver salt catalysis

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Summary

  1. 1.

    The cerimetric method for the estimation of hypophosphite proposed byBernhart 2 has been studied in detail. It has been found that irregular results are obtained when hypophosphite solution is heated with ceric sulphate and sulphuric acid on a boiling water bath. Quantitative results are obtained only when the mixture is carefully boiled on an electric hot plate. This procedure is inconvenient as it involves loss of liquid due to bumping and spurting.

  2. 2.

    We have now found that quantitative results are obtained even at the temperature of the boiling water bath, if silver sulphate is added to catalyse the reaction. Moreover, when the catalyst is used, it is possible to work at a much lower concentration of sulphuric acid and ceric sulphate than proposed byBernhart 2.

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Authors and Affiliations

  1. Department of Chemistry, Andhra University, Waltair, India

    K. Bhaskara Rao &  G. Gopala Rao D. Sc. (Head of the Department of Chemistry)

Authors
  1. K. Bhaskara Rao
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  2. G. Gopala Rao D. Sc.
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Bhaskara Rao, K., Gopala Rao, G. Cerimetric estimation of hypophosphite: Silver salt catalysis. Z. Anal. Chem. 147, 279–283 (1955). https://doi.org/10.1007/BF01858070

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  • DOI: https://doi.org/10.1007/BF01858070

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