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Hydrolysis constant information


The word hydrolysis is applied to chemical reactions in which a substance reacts with water. In organic chemistry, the products of the reaction are usually molecular, being formed by combination with H and OH groups (e.g., hydrolysis of an ester to an alcohol and a carboxylic acid). In inorganic chemistry, the word most often applies to cations forming soluble hydroxide or oxide complexes with, in some cases, the formation of hydroxide and oxide precipitates.

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Hydrolysis constant

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+ (pz–px–q) H2O Hydrolysis constants (log values) in critical compilations at infinite dilution and T = 298.15 K: Hydrolysis constants (log values) in...

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Hydrolysis

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molecules by hydrolysis (e.g., sucrose being broken down into glucose and fructose), this is recognized as saccharification. Hydrolysis reactions can...

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Equilibrium constant

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Baes, C. F.; Mesmer, R. E. (1976). "Chapter 18. Survey of Hydrolysis Behaviour". The Hydrolysis of Cations. Wiley. pp. 397–430. Schwarzenbach, G.; Flaschka...

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Metal ions in aqueous solution

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radius, r, increases. Aqua ions are subject to hydrolysis. The logarithm of the first hydrolysis constant is proportional to z2/r for most aqua ions. The...

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ATP hydrolysis

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phosphate, the hydrolysis of ATP has the effect of lowering the pH of the reaction medium. Under certain conditions, high levels of ATP hydrolysis can contribute...

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Acid dissociation constant

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addition, the metal ion is subject to hydrolysis, that is, it behaves as a weak acid, so the pK values for the hydrolysis reactions must also be known. Assessing...

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Stability constants of complexes

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stability constant explicitly, as illustrated above. The formation of a hydroxo complex is a typical example of a hydrolysis reaction. A hydrolysis reaction...

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Monochloramine

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hypochlorous acid: RR′NCl + H2O ⇌ RR′NH + HOCl The quantitative hydrolysis constant (K value) is used to express the bactericidal power of chloramines...

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List of aqueous ions by element

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extent of hydrolysis can be quantified when the values of the hydrolysis constants can be determined experimentally. The first hydrolysis constant refers...

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Hammett equation

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(+0.417) the hydrolysis of substituted benzyl chlorides in acetone-water at 69.8 °C (-1.875). The reaction constant, or sensitivity constant, ρ, describes...

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Solubility equilibrium

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"Nobel lecture" (PDF). Nobel Prize. Baes, C. F.; Mesmer, R. E. (1976). The Hydrolysis of Cations. New York: Wiley. Payghan, Santosh (2008). "Potential Of Solubility...

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Plutonyl

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and 845 nm were observed for the mononuclear and dinuclear hydrolysis species. Hydrolysis of plutonyl is important for an understanding of pollution of...

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Determination of equilibrium constants

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implications for all protonation equilibria in aqueous solution and for hydrolysis constants in particular. It is quite usual to omit from the model those species...

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Rate equation

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bimolecular reaction and a simultaneous hydrolysis (which can be treated as pseudo order one) takes place: the hydrolysis complicates the study of the reaction...

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Ethyl acetate

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acetate is rarely selected as a reaction solvent because it is prone to hydrolysis, transesterification, and condensations. Ethyl acetate is the most common...

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Chemical equilibrium

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oxygen by hemoglobin in blood Acid–base equilibria: acid dissociation constant, hydrolysis, buffer solutions, indicators, acid–base homeostasis Metal–ligand...

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Lactone

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because although the enthalpies of the hydrolysis of esters and lactones are about the same, the entropy of the hydrolysis of lactones is less than the entropy...

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Solubility

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numerical value of solubility constant. While the solubility constant is not as simple as solubility, the value of this constant is generally independent of...

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Nitrile

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second-order rate constant for hydroxide-ion catalyzed hydrolysis of acetonitrile to acetamide is 1.6×10−6 M−1 s−1, which is slower than the hydrolysis of the amide...

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Ester

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Alton; Andrews, Roy C. (1928). "The Relation Between the Hydrolysis Equilibrium Constant of Esters and the Strengths of the Corresponding Acids". Journal...

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Adenosine triphosphate

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total amount of ATP + ADP remains fairly constant. The energy used by human cells in an adult requires the hydrolysis of 100 to 150 mol/L of ATP daily, which...

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Kinetic isotope effect

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coworkers demonstrated 34 S KIE at natural abundance measurements for the hydrolysis of sulfate monoesters. Their observation of a large KIE suggests S-O bond...

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Aluminium phosphide

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from hydrolysis and oxidation. AlP crystals are dark grey to dark yellow in color and have a zincblende crystal structure with a lattice constant of 5...

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Proteolysis

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of proteins into smaller polypeptides or amino acids. Uncatalysed, the hydrolysis of peptide bonds is extremely slow, taking hundreds of years. Proteolysis...

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Hypervalent molecule

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during hydrolysis and from this a binucleophilic reaction mechanism was proposed. Corriu and coworkers then measured the rates of hydrolysis in the presence...

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Enzyme

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3, Hydrolases: catalyze the hydrolysis of various bonds EC 4, Lyases: cleave various bonds by means other than hydrolysis and oxidation EC 5, Isomerases:...

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Chloroacetic acid

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3 HCl The second method entails hydrolysis of trichloroethylene: ClHC=CCl2 + 2 H2O → ClH2C−COOH + 2 HCl The hydrolysis is conducted at 130–140 °C in a...

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