Abstract
AbstractThe effect of adding activated charcoal to solutions of relatively strong organic acids on the shape of the titration curves is examined theoretically. Titration curves were calculated on the basis of the assumption that the uneven distribution of the acids, due to the presence of the adsorbent, can be described as a two‐space distribution, one of the spaces containing the acids in the adsorbed state, the other containing the unadsorbed remainder of the acids and at the same time determining the potential of the hydrogen electrode. The ionic compositions of the solutions in both spaces are supposed to be interrelated in accordance with the rules of the Donnan distribution. The calculated curves show features quite similar to those obtained experimentally. Especially the remarkable influence of the valency of the base used for the titration could be explained satisfactorily.
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