Dismutation is a chemical reaction in which a single compound serves both as an oxidizing and a reducing agent. Also known as disproportionation. The most fundamental reactions in chemistry are the redox processes. ... Reduction or reducing has several meanings: In mathematics, reduction is the process of manipulating a series of equations or matrices into a desired simpler format. ... jfkdjdfdfd--69. ...

An example of dismutation is the catalysis of hydrogen peroxide to water and oxygen by the enzyme catalase which occurs in two stages: Hydrogen peroxide (H2O2) is a clear liquid, slightly more viscous than water, that has strong oxidizing properties and is therefore a powerful bleaching agent that has found use as a disinfectant, as an oxidizer, and in rocketry (particularly in high concentrations as high test peroxide (HTP)) as a monopropellant and... Ribbon diagram of the catalytically perfect enzyme TIM. An enzyme is a protein that catalyzes, or speeds up, a chemical reaction. ... link title Catalase Catalase (human erythrocyte catalase: PDB 1DGF, EC 1. ...

H₂O₂ + Fe(III)-E → H₂O + O=Fe(IV)-E (oxidation of Fe(III) to Fe(IV))

H₂O₂ + O=Fe(IV)-E → H₂O + Fe(III)-E + O₂ (reduction of Fe(IV) back to Fe(III))

(Where Fe-E represents the iron centre of the heme group attached to the enzyme.) Hydrogen peroxide (H2O2) is a clear liquid, slightly more viscous than water, that has strong oxidizing properties and is therefore a powerful bleaching agent that has found use as a disinfectant, as an oxidizer, and in rocketry (particularly in high concentrations as high test peroxide (HTP)) as a monopropellant and... General Name, Symbol, Number iron, Fe, 26 Chemical series transition metals Group, Period, Block 8, 4, d Appearance lustrous metallic with a grayish tinge Atomic mass 55. ... A hæm or heme is a metal-containing cofactor that consists of an iron atom contained in the center of a large heterocyclic organic ring called a porphyrin. ...

External link

• Glossary entry