Mesures de Conductivité Et de Coefficients de Diffusion Dans Les Mélanges Eau - Hydroxyde de Sodium

Claes, Paul;Wakenge, B.;Gilbert, J.
(1993) Societes Chimiques Belges. Bulletin — Vol. 102, n° 3, p. 149-163 (1993)

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  • Claes, PaulUCLouvain
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  • Wakenge, B.
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  • Gilbert, J.
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Abstract
Measurements of conductivity and diffusion constants were carried out in H2O-NaOH mixtures at NaOH mole fractions ranging from 0.02 to 0.6 (t(max) almost-equal-to 200-degrees-C). Equivalent conductance isotherms and diffusion isotherms of the TeO32- and PbO22- ions do not show any particular occurrence when the corresponding activation energy values exhibit a broad maximum at about X(NaOH) = 0.3 and a sharper maximum at X(NaOH) = 0. 5. This last composition corresponds to the NaOH.1 H2O distectic. A transition in the mechanism of conductance in molten NaOH hydrates from the proton transfer mechanism to the hydrodynamic mechanism can be suggested.
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Claes, P., Wakenge, B., & Gilbert, J. (1993). Mesures de Conductivité Et de Coefficients de Diffusion Dans Les Mélanges Eau - Hydroxyde de Sodium. Societes Chimiques Belges. Bulletin, 102(3), 149-163. https://doi.org/10.1002/bscb.19931020302 (Original work published 1993)