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Carbonate as impurity often interferes in acid-base titrations. To take into account the liquid-gas equilibrium [H(2)CO(3) right harpoon over left harpoon CO(2(g)) H(2)O)] a new method is proposed: neutratizations are performed in a closed system with a known volume of gaseous phase. The corresponding equations, processed by multiparametric refinement, are successfully applied in the extreme case, viz. neutralization of a strong acid by sodium carbonate solution.
Wozniak
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Laboratoire de Physicochimie des Solutions, Ecole Nationale Supérieure de Chimie de Lille, B.P. 40, 59650 Villeneuve d'Ascq, France.
Nowogrocki
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