Results 151 to 160 of about 13,884 (201)
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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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Improved linear titration plots for weak-acid titrations
Talanta, 1974Linear titration plot functions are derived for the following types of titration: weak monobasic acid-strong base, weak dibasic acid-strong base weak acid-weak base. These functions are compared with the corresponding Gran functions, where possible, and the effects of the following sources of error are discussed: the neglect of activity coefficients ...
D, Midgley, C, McCallum
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Soil Science Society of America Journal, 1970
Abstract Seven acid soils containing varied cation exchange materials were studied by means of conductometric and potentiometric titrations with Ba(OH) 2 , NaOH, Na 2 B 4 O 7
H. C. Dewan, C. I. Rich
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Abstract Seven acid soils containing varied cation exchange materials were studied by means of conductometric and potentiometric titrations with Ba(OH) 2 , NaOH, Na 2 B 4 O 7
H. C. Dewan, C. I. Rich
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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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Titratable acidities of crystalline amino acid admixtures
American Journal of Health-System Pharmacy, 1980Titration curves for total parenteral nutrient (TPN) products were developed and used to determine the amount of alkali needed to make various pH changes. Equations and graphs for determining the titratable acidities of TPN solutions are presented. Samples of five crystalline amino acid products and of 1:1 mixtures of the products with 50% dextrose ...
R J, Sturgeon +4 more
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The Chemical Educator, 2002
Phosphoric acid anodizing solutions are routinely titrated to monitor their concentrations; however, after successive anodizations of aluminum metal, increasing amounts of dissolved aluminum interfere with the neutralization titration. The true concentration of phosphoric acid is determined by a correction factor based on the concentration of the ...
Marina C. Koether, Charles R. Munafo
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Phosphoric acid anodizing solutions are routinely titrated to monitor their concentrations; however, after successive anodizations of aluminum metal, increasing amounts of dissolved aluminum interfere with the neutralization titration. The true concentration of phosphoric acid is determined by a correction factor based on the concentration of the ...
Marina C. Koether, Charles R. Munafo
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Titration of Acids and Beverages Using a Conductivity Titrator
Korean Science Education Society for the GiftedThe beverages contain acids such as citric acid, vitamin C, and phosphoric acid, in addition to sugar, which contribute to their sour taste. In this study, an acid–base titration was performed using a conductivity titrator to conduct both quantitative and qualitative analyses of the acids present in beverages. Conductivity is proportional to the number
Won-Seok Chae +4 more
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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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The titration of polymeric acids
Journal of Colloid Science, 1957Abstract Data in the literature for the titration of polyacrylic and polymethacrylic acids are considered. Polyacrylic acid gives straight-line graphs of pK against α 1 3 provided no neutral salt is present; here pK = pH + log 1-α/α and α is the degree of ionization.
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Alternative methods for titratable acidity determination
Talanta, 1995Methods for determination of titratable acidity, other than traditional titration, i.e. methods without titration, are considered. A number of them use analytical acid-base reagents which quickly convert a mixture of strong and weak acids into a new system. This conversion makes it possible to obtain directly the analytical signal (pH, optical density,
O Y, Berezin +3 more
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