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_a _aAcid-base titrations in nanoqueous solvents and solvent mixtures. _d _b _n _c _h6 _p |
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_i _i _a |
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_3 _3 _a _d _b _c46 |
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_a _aABSTRACT : The acid-base determination of different substances by nonaqueous titrations is highly preferred in pharmaceutical analyses since the method is quantitative, exact, and reproducible. The modern interpretation of the reactions in nonaqueous solvents started in the last century, but several inconsistencies and unsolved problems can be found in the literature. The acid-base theories of Brønsted-Lowry and Lewis as well as the so-called solvent theory are outlined first, then the promoting (and leveling) and the differentiating effects are discussed on the basis of the hydrogen-bond concept. Emphasis is put on the properties of formic acid and acetic anhydride since their importance is increasing. _d _b _c56 |
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_x _x _aAcid-base chemistry.;Volumetric analysis. _d _b _z _y20 _v |
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_a _a _d _g80 (7) : Jul. 2003. pp. 822-828. _m _tJournal of Chemical Education _b _v _i _p |
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