D.H. Ripin, D.A. Evans 19-20 9 13 11 24.5 H2 ~36 *Values <0 for H2O and DMSO, and values >14 for water and >35 for DMSO were extrapolated using various methods. HCCH Substrate SubstrateSubstrate pKa H2O (DMSO) Substrate AMIDES HYDROCARBONS pKa H2OH(DMSO) pKa pKa2O (DMSO) H2O (DMSO) CH4 CH2=CHCH3 PhH CH2=CH2 PhCH3 Ph2CH2 …
Bordwell pKa Table - Organic Chemistry Data
2017年10月27日 · 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.
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.
See cited website below for additional data. *Values <0 for H2O and DMSO, and values >14 for water and >35 for DMSO were extrapolated using various methods. For a comprehensive compilation of Brodwell pKa data see: http://www.chem.wisc.edu/areas/reich/pkatable/index.htm. pKa Table.5 11/4/05 1:45 PM.
How to Use a pKa Table - Master Organic Chemistry
2010年9月29日 · One way to evaluate basicity is by the pKa of the conjugate acid (which I call pKaH). The pKa of the conjugate acid of diphenyl ether is about -3 or so, while the pKa of the conjugate acid of diphenylamine is 0.78. Search for the Evans pka table for the references.
The pKa Table Is Your Friend - Master Organic Chemistry
2010年6月18日 · To calculate the Isoelectric point of an amino acid or peptide (or protein, if you are daring), you take the pKa of the carboxylic acid (between 2 and 4 usually) and the amine (9-11), add them, and divide by 2 for the case of an amino acid with no side chain that has a …
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Acid-Base III. The pKa Table and What Information It Tells You
2017年6月7日 · The pKa table tells you a lot more information than you realise. They don’t only tell you the pKa values for each set of species with certain functional groups, they also tell you the relative strength of each species.
11.4: pKa Table - Chemistry LibreTexts
pKa VALUES OF COMMON ORGANIC AND INORGANIC ACIDS. This page titled 11.4: pKa Table is shared under a not declared license and was authored, remixed, and/or curated by Sergio Cortes.
6.4: Acid strength and pKa - Chemistry LibreTexts
We can see a clear trend in acidity as we move from left to right along the second row of the periodic table from carbon to nitrogen to oxygen. The key to understanding this trend is to consider the hypothetical conjugate base in each case : the more stable (weaker) the conjugate base, the stronger the acid .
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