Results 11 to 20 of about 18,999 (260)
Deprotonation of salicylic acid and 5-nitrosalicylic acid in aqueous solutions of ethanol [PDF]
Journal of the Serbian Chemical Society, 2011 The protonation constant values of two hydroxybenzoic acids (salicylic and 5-nitrosalicylic acid) were studied in some water-ethanol solutions using spectrophotometric and potentiometric methods at 25°C and in an ionic strength of 0.1 M sodium ...
Faraji Mohammad +3 more
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Journal of the Turkish Chemical Society, Section A: Chemistry, 2020 The aim of this studies are to determine protonation constants of selected ligands {4,7-dimethyl-1,10-phenanthroline (4,7-dmphen), aspartic acid (asp) and glutamic acid (glu)} and their stability constants of (1:1) and (1:1:1) complexes with Ni(II) and ...
Duygu İnci
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Determination and structural correlation of pK BH + for meta- and para- substituted benzamides in sulfuric acid solutions [PDF]
Journal of the Serbian Chemical Society, 2006 The protonation of some meta and para substituted benzamides in sulfuric acid solutions was studied by UV spectroscopy in the 190-350 nm region. Principal component analysis was applied to separate the effect of protonation from the medium effect.
Stojković Goran, Popovski Emil
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E-Journal of Chemistry, 2007 The protonation constants of diamines such as ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane, o-phenylenediamine, m-phenylene-diamine, p-phenylenediamine were determined on the basis of Bjerrum and Calvin method in methanol-water mixtures.
Sangita Sharma +4 more
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Protonation Equilibria of L-Aspartic, Citric and Succinic Acids in Anionic Micellar Media
E-Journal of Chemistry, 2009 The impact of sodium lauryl sulphate (SLS) on the protonation equilibria of L-aspartic acid, citric acid and succinic acid has been studied in various concentrations (0.5-2.5% w/v) of SLS solution maintaining an ionic strength of 0.16 mol dm-3 at 303 K ...
P. Srinivasa Rao +4 more
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Zaštita Materijala, 2021 PM3 semiempirical method was used for quantum chemical investigation in order to investigate the electronic properties and to determine the protonation centre in 1,2,4-triazoline-3-thione molecule.
Mirjana S. Jankulovska +3 more
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Protonation of maleic and fumaric acid in aqueous sulfuric acid solutions [PDF]
Journal of the Serbian Chemical Society, 2000 The protonations of maleic and fumaric acid in an acidic medium (aqueous solutions of sulfuric acid) were followed spectrophotometrically at room temperature. The acid-base equilibria were characterised qualitatively and quantitatively. The pKBH+
Jankovska Katica +2 more
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Proton mass decomposition and hadron cosmological constant [PDF]
Physical Review D, 2021 Version to be published in Phys.
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International Journal of Electrochemical Science, 2013 In this paper, a potentiometric study on the thermodynamic acid base properties and solubility of three hydroxypyrones (successively indicated as maltols), namely maltol (Hma), ethylmaltol (Hema) and kojic acid (H2ka), is reported.
Clemente Bretti +4 more
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Investigation of the Specific Ion Interactions and Determining Protonation Constant of 3,5-Dihydroxy-2-(3,4,5-trihydroxybenzoyl)oxy-6-[(3,4,5-trihydroxybenzoyl)oxymethyl] oxan-4-yl] 3,4,5-trihydroxybenzoate at Different Ionic Strength [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2019 In this research, the protonation constant value of tannic acid was determined at 25 °C and different ionic strengths (0.1 to 0.7 mol/dm3 NaCl) using potentiometric titration technique. The dependence of protonation constant on ionic strength was modeled
Gholamreza Ebrahimzadeh Rajaei +1 more
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