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1 Ιαν 2011 · OpenEye’s partner, pKaData Limited has converted all four aqueous pKa compilations of organic acids and bases sponsored by the International Union of Pure and Applied Chemistry (IUPAC) from...
27 Οκτ 2017 · Below are tables that include determined pKa values for various acids as determined in water, DMSO and in the gas Phase. These tables are compiled in PDF files below. For a more comprehensive discussion on this topic, please see Acidity and Basicity by professor William Reusch, Michigan State University.
pKa Data Compiled by R. Williams pKa Values INDEX Inorganic 2 Phenazine 24 Phosphates 3 Pyridine 25 Carboxylic acids 4, 8 Pyrazine 26 Aliphatic 4, 8 Aromatic 7, 8 Quinoline 27 Phenols 9 Quinazoline 27 Alcohols and oxygen acids 10, 11 Quinoxaline 27 Amino Acids 12 Special Nitrogen Compounds 28 Peptides 13 Hydroxylamines 28 Nitrogen Compounds 14 ...
From the kinetics of chlorination of acetaldehyde and isobutyraldehyde we have been able to determine the pK, values of the free aldehydes (corrected for covalent hydration) as 16.9 t 0.5 and 15.7 t 0.5, respectively.
5 Φεβ 2011 · From the kinetics of chlorination of acetaldehyde and isobutyraldehyde we have been able to determine the pKa values of the free aldehydes (corrected for covalent hydration) as 16.9 ± 0.5...
Approximate pKa chart of the functional groups: values to know 1. Protonated carbonyl pKa = ‐7 Other important pKa’s 2. Protonated alcohol or ether pKa = ‐2 to ‐3 H2 = 35 3.
The pka of water and H 3O+ have been experimentally determined to be 14.0 and 0.0, respectively. Earlier values of 15.7 and –1.74, respectively are erroneous numbers proposed by scientists who made some errors in the calculated “rational” values. See: 1) Helv. Chim. Acta 2014, 97, 1. and 2) J. Chem. Educ. 2017, 94, 690.
