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KMID : 0615219760030010051
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Journal of Kwangju Health
1976 Volume.3 No. 1 p.51 ~ p.58
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Study of Effects of Neutral Inorganic Salts on potentiometric Titration Curves of Weak Bases in Nonaqueous Solvents
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Kang Young Sik
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Abstract
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The weak bases m-toluidine, o-toluidine, and p-anisidine have been titrated in aceto ne containing various concentrations of magnesium perchlorate with perchloric acid in aceetone of acetonitrile. This salt enhanced the potentiometric end point breaks by causing a shift in the potential before the end point to less positive values. The beses appeared to be leveled to approximately the same strength except for the weakest base, o-nitroaniline, where the leveling was incomplete.
The maximum potentiometric breaks occurred at an intermediate salt concentration.
The break diminished at higher salt concentrations because of adecrease in the potential beyond the end point.
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