Potentiometric characterization of weak acids by multiple sample addition-I. Linear equations and intrinsic performance of the method.
The suitability of linearized multiple sample-addition for the potentiometric characterization of monoprotic weak acids is examined. Linear equations for the separate or simultaneous determination of the acidity constant and of the sample concentration by treatment of experimental data are introduced. The intrinsic performance of the method and the application range of the different equations are discussed with reference to the theoretical effect of measurement errors on the values of the quantities to be determined.
Maccà
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Department of Inorganic, Metallorganic and Analytical Chemistry, University of Padua, Via Marzolo 1, I-35131 Padova, Italy.
Merkoci
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