Results 171 to 180 of about 12,421 (222)
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Titratable acidity: A Pitts concept revisited
Scandinavian Journal of Clinical and Laboratory Investigation, 2014Titratable Acidity (TA) in urine can be measured directly or calculated from actual and reference pH, by using the pKa₂ 6,8 for phosphate. In urine, H₂PO₄(-) represents the excretion of filtered H₂PO₄(-), filtrated HPO₄(2-) being completely reabsorbed by the proximal tubule (the Van Slyke approach).
Roberto, Mioni, Giuseppe, Mioni
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Recueil des Travaux Chimiques des Pays-Bas, 1948
AbstractThe researches here described deal with electrometric titrations of strong acids in the presence of adsorption charcoal (Norit). The titration curves of the system containing charcoal are of the type of titration curves of weak acids; the systems have a pronounced buffer capacity.
H. J. C. Tendeloo +2 more
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AbstractThe researches here described deal with electrometric titrations of strong acids in the presence of adsorption charcoal (Norit). The titration curves of the system containing charcoal are of the type of titration curves of weak acids; the systems have a pronounced buffer capacity.
H. J. C. Tendeloo +2 more
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Thermometric titration of acids in pyridine
Talanta, 1974Thermometric titration of HClO(4), HI, HNO(3), HBr, picric acid o-nitrobenzoic acid, 2,4- and 2,5-dinitrophenol, acetic acid and benzoic acid have been attempted in pyridine as solvent, using 1,3-diphenylguanidine as the base. Except in the case of 2,5-dinitrophenol, acetic acid and benzoic acid, the results are, in general, reasonably satisfactory ...
R, Vidal, L M, Mukherjee
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Non-aqueous titration of hydroxamic acids
Talanta, 1966Benzohydroxamic acid is titrated with 0.1M tetrabutyl-anunonium hydroxide in nine non-aqueous solvents with three different indicating electrodes. The best results are obtained using dimethylformamide as solvent and platinum-platinum electrodes. Four monoprotic and three diprotic hydroxamie acids and iron(III) benzohydroxamate have been successfully ...
Stamey, T. W., Christian, Robert V.
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2010
Titratable acidity and pH are two interrelated concepts in food analysis that deal with acidity. Each of these quantities is analytically determined in separate ways and each provides its own particular insights on food quality. For example, while pH is important to assess the ability of a microorganism to grow in a specific food, titratable acidity is
George D. Sadler, Patricia A. Murphy
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Titratable acidity and pH are two interrelated concepts in food analysis that deal with acidity. Each of these quantities is analytically determined in separate ways and each provides its own particular insights on food quality. For example, while pH is important to assess the ability of a microorganism to grow in a specific food, titratable acidity is
George D. Sadler, Patricia A. Murphy
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Recueil des Travaux Chimiques des Pays-Bas, 1952
AbstractThe effect of adding activated charcoal to solutions of relatively strong organic acids on the shape of the titration curves is examined theoretically. Titration curves were calculated on the basis of the assumption that the uneven distribution of the acids, due to the presence of the adsorbent, can be described as a two‐space distribution, one
A. E. Mans, G. J. Vervelde
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AbstractThe effect of adding activated charcoal to solutions of relatively strong organic acids on the shape of the titration curves is examined theoretically. Titration curves were calculated on the basis of the assumption that the uneven distribution of the acids, due to the presence of the adsorbent, can be described as a two‐space distribution, one
A. E. Mans, G. J. Vervelde
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Titration of Mixtures of Acids
Nature, 1957THE determination of the degree of polymerization of polyamides or polypeptides by end-group titration is, in effect, a determination of the amount of the weakly acidic carboxyl group (dissociation constant K 2) in presence of a large excess of the base of a stronger acid, the amide or peptide group (dissociation constant K 1).
D. SIMS, L. PETERS
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Potentiometric titration of lignosulfonic acids
Russian Journal of Applied Chemistry, 2008The conditions of potentiometric titration of lignosulfonic acids allowing quantitative determination of strongly and weakly acidic functional groups in lignosulfonates were determined.
N. V. Shul’ga +2 more
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2012
The theoretical study of titration curves is necessary because it allows us, among other things, to choose the optimal conditions for detecting the equivalence point in order to minimize the titration error.
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The theoretical study of titration curves is necessary because it allows us, among other things, to choose the optimal conditions for detecting the equivalence point in order to minimize the titration error.
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Logarithmic diagrams in acid—base titrations and estimation of titration errors
Talanta, 1980The use of a logarithmic diagram for the estimation of the pH-value at the equivalence point and the titration error when a solution containing one or two acids is titrated with standard alkali is described.
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