Transition Metal Chemistry

, Volume 6, Issue 5, pp 264–266 | Cite as

Kinetics of oxidation of hypophosphite ion by platinum(IV) in an alkaline medium

  • K. K. Sen Gupta
  • Surajit Maiti
  • Pratik K. Sen
Full Papers


The kinetics of the oxidation of hypophosphite ion by platinum(IV) have been studied spectrophotometrically in alkaline medium at different temperatures. The rate increases as the pH increases and the empirical rate law applicable to the reaction is given by:-d[PtIV]/dt = k3[PtIV][H2PO2−][OH]

The rate constant is 2.17×10−3 (l2 mo−2s−1) at 40.5°. The energy and entropy of activation for the reaction are 104.2 kJ mol−1 and 28.5 JK−1mol−1 respectively.


Oxidation Entropy Physical Chemistry Platinum Inorganic Chemistry 
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Copyright information

© Verlag Chemie GmbH 1981

Authors and Affiliations

  • K. K. Sen Gupta
    • 1
  • Surajit Maiti
    • 1
  • Pratik K. Sen
    • 1
  1. 1.Department of ChemistryJadavpur UniversityCalcuttaIndia

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