Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

General relations among thermodynamic parameters characterizing chemical equilibria with species I^-, I₃^-, I₅^-, and I₂ in the two-phase water-nitrobenzene extraction system have been derived. Furthermore, these relations have been used for calculating equilibrium constants K₁^aq(I₃^-) and K₂^aq(I₅^-) corresponding to homogeneous reactions I^-(aq) + I₂(aq) ⇄ I₃^-(aq) and I₃^-(aq) + I₂(aq) ⇄ I₅^-(aq) proceeding in the aqueous phase of the system under study. Finally, stability of polyiodides I₃^- and I₅^- in both phases has been discussed.