منابع مشابه
Determination of Acidity Constants of p-Rosolic acid and Bromoxylenol Blue by Solution Scanometric Method
Recently solution scanometry, as a new, simple, fast, portable, and economic method was introduced for determination of acidity constants of indicator and dyes. In this study, a method was applied for the determination of the acidity constant of p-Rosolic acid (RA) and Bromoxylenol blue (BXB) indicators. The method is based on scanning of Plexiglas® sheet containing colored solutions with a fla...
متن کاملAqueous solubility and acidity constants of cholic,
Cholic acid, deoxycholic acid, chenodeoxycholic acid, and ursodeoxycholic acid were purified by a foam fractionation method. Using thermogravimetric analysis, the attached water molecule was found to be completely removed from solids of the latter three at 100°C, while cholic acid still had one water molecule of crystallization per two cholic acid molecules at that temperature. The acidity cons...
متن کاملCalculation of Acidity Constants of Protonated Weak Organic Bases by a New Method, III* Ethers
Chemistry Department, College of Science, University of Texas, El Paso, T X 79968, USA Z. Naturforsch. 84b, 614-620 (1979); received September 11, 1978 Relative Basicity Parameter, Conductivity of Protonated Ethers, Calculation of PKA'S for R20H+ It is shown in this paper that a consistent set of values of pKBH+ for 24 ethers, in good agreement with the few which have been obtained b y other me...
متن کاملA simple graphical method for determining the inhibition constants of mixed, uncompetitive and non-competitive inhibitors.
A new method is described for plotting kinetic results for inhibited enzyme-catalysed reactions. It provides a simple way of determining the inhibition constant, K'(i), of an uncompetitive, mixed or non-competitive inhibitor.
متن کاملAcidity constants of lumiflavin from first principles molecular dynamics simulations.
We have computed the free energy profiles of the deprotonation reactions of lumiflavin in the semiquinone and fully reduced oxidation states using constrained DFT-based molecular dynamics simulations. In the semiquinone state, the N5 nitrogen atom and the N1 nitrogen atom can become protonated. We find, in agreement with experiment, that the N5 site is the predominant proton acceptor in the sem...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1969
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed046p535.1