Journal of Radioanalytical Chemistry

, Volume 35, Issue 1, pp 63–69 | Cite as

Etude par Spectrophotometrie d'absorption de l'Equilibre Pu4++Cl⇋Pu3++1/2 Cl2 dans le melange LiCl−KCl (70–30% mol) fondu

  • G. Landresse
  • G. Duyckaerts
Article

Abstract

The quantitative study of the equilibrium Pu4++Cl⇋Pu3++1/2 Cl2 in LiCl−KCl (70–30% mol) at 455, 500, 550 and 600°C by visible and near I.R. absorption spectrophotometry allows the calculation of the reaction's equilibrium constant, the mean thermodynamic data ΔH=27±14 kJ·mol−1 and ΔS=37±17 J·mol−1·K−1 and the standard potential of the couple\({{Pu^4 } \mathord{\left/ {\vphantom {{Pu^4 } {Pu^{3 + } }}} \right. \kern-\nulldelimiterspace} {Pu^{3 + } }}\left( {E_{{{Pu^4 } \mathord{\left/ {\vphantom {{Pu^4 } {Pu^{3 + } }}} \right. \kern-\nulldelimiterspace} {Pu^{3 + } }}}^O - E_{{{Cl2} \mathord{\left/ {\vphantom {{Cl2} {Cl}}} \right. \kern-\nulldelimiterspace} {Cl}}^ - }^O = - 0.007 \pm 0.011 V at 450^\circ C} \right)\).

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Bibliographie

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Copyright information

© Akadémiai Kiadó 1977

Authors and Affiliations

  • G. Landresse
    • 1
  • G. Duyckaerts
    • 1
  1. 1.Institut de Radiochimie Université de Liège au Sart TilmanLiège(Belgique)

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