Use table search to locate desired compound in database. Unless otherwise stated, pKa and pKb was measured at STP. For reference or additional information, please contact [email protected]

Apr 28, 2021 · To know the relationship between acid or base strength and the magnitude of , Kb, pKa, and pKb. The magnitude of the equilibrium constant for an ionization reaction can be used to determine the relative strengths of acids and bases.

Oct 27, 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 ...

pKb: The negative logarithm of the base dissociation constant (K b), defined as pKb = -log10(Kb). A lower pKb indicates a stronger base that more easily accepts protons. The relationship between these key values is given by the equation:

Here are some of the values of weak and strong acids and bases dissociation constants used by BATE when calculating pH of the solution and concetrations of all ions present. For the definitions of Kan constants scroll down the page. * see diclaimer below pK b table. For the definitions of Kbn constants scroll down the page.

Examples: pKAH1 = conjugate acid's first dissociation; pKb = basic dissociation constant; The vast majority of entries will be of the form pKAH, pKA, or pKB, but there are some exceptions in the reference works that include parentheses to identify an unusual protonation site or structure, e.g. pK(indole-ring) is pK for protonation on indole ...

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This is a calculator to calculate pKa, pKb, Ka, and Kb from any one of the listed four values. Kw is assumed to be 14.

a Protein Data Bank extension database of pK a and pI theoretical values p K a values of ionizable residues and isoelectric points of proteins provide valuable local and global insights about their structure and function.