Thermodynamics of the complexation reactions of UO 2 2+ , Be2+ and Cu2+ with methoxybenzoic acids

  • B. D. Mali
  • L. D. Pethe
Physical and Theoretical


The stability constants and thermodynamic parameters of complexation reactions of\(UO_2 ^{2 + } \), Be2+ and Cu2+ with some methoxybenzoic acids in 76% (v/v) dioxane water medium and μ = 0.1 M NaClO4 have been potentiometrically investigated. All the metal ions form 1: 1 complexes. The logK 1 varies linearly with mole fraction of dioxane but nonlinearly with the reciprocal of dielectric constant in the case of UO 2 2+ chelates. In all the complexes ΔG values follow the Basolo Pearson stability order: UO 2 2+ > Be2+ > Cu2+.


Stability constants Gibbs-Helmholtz equation Born equation 


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Copyright information

© Indian Academy of Sciences 1979

Authors and Affiliations

  • B. D. Mali
    • 1
  • L. D. Pethe
    • 1
  1. 1.Department of ChemistryMarathwada UniversityAurangabad

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