| Abstract
| - Titration is most often associated with the idea of astoichiometric reaction. Generally, it is not consideredpossible to titrate a compound against a reagent unlessthe titration reaction is near total and if the result is nota product of well-defined stoichiometry. In this work, weillustrate that accurate titration is possible with compounds and reagents that interact to form an associationof undefined stoichiometry. Our model is the potentiometric titration of nonionic surfactant with cationic surfactant using a cationic surfactant-selective electrode. Theresult of this reaction is mixed micelles, the compositionof which depends on the concentrations of the twosurfactants in solution.
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