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The oxidation of acetaldehyde by the octacyanomolybdate(V) ion in an aqueous alkaline medium

  • C. Robert Dennis
  • Izak M. Potgieter
  • Ernie H. G. Langner
  • Eleanor Fourie
  • Jannie C. Swarts
Article
  • 19 Downloads

Abstract

The kinetics of the oxidation of acetaldehyde by octacyanomolybdate(V) ions in aqueous alkaline medium has been studied. The reaction display zero-order kinetics in [Mo(CN) 8 3– ] and is first order in [CH3CHO]. An acetaldehyde-dependent reaction rate constant, \(k_{{{\text{CH}}_{3} {\text{CHO }}}}\) = 1.41 ± 0.03 × 10−5 s−1 has been observed at pH 9. A significant dependence on [OH] has been observed, and a value pKb = − 0.40 ± 0.02 for the deprotonation of the hydrated form of acetaldehyde has been obtained. Activation parameters for the reaction have been obtained, and a reaction mechanism is proposed.

Supplementary material

11243_2018_280_MOESM1_ESM.docx (21 kb)
Supplementary material 1 (DOCX 21 kb)

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • C. Robert Dennis
    • 1
  • Izak M. Potgieter
    • 1
  • Ernie H. G. Langner
    • 1
  • Eleanor Fourie
    • 1
  • Jannie C. Swarts
    • 1
  1. 1.Chemistry DepartmentUniversity of the Free StateBloemfonteinRepublic of South Africa

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