Abstract
The kinetics of Pu(IV) reduction with zinc amalgam under different conditions [H2SO4 concentration 0.5–4.0 M, initial Pu(IV) concentration (1.11–4.80) × 10−3 M, temperature 294.0–323.0 K] was studied by spectrophotometry. The kinetic scheme of the Pu(IV) transformation and the rate law were suggested, and the reduction rate constants were determined. The activation energies Ea and the thermodynamic functions of formation of the activated complex (activation Gibbs energy ΔG≠, enthalpy ΔH≠, entropy ΔS≠) were determined.
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