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Pyrophosphoric acid. In chemistry , a phosphoric acid , in the general sense, is a phosphorus oxoacid in which each phosphorus (P) atom is in the oxidation state +5, and is bonded to four oxygen (O) atoms, one of them through a double bond , arranged as the corners of a tetrahedron .
The parent pyrophosphates are derived from partial or complete neutralization of pyrophosphoric acid. The pyrophosphate bond is also sometimes referred to as a phosphoanhydride bond, a naming convention which emphasizes the loss of water that occurs when two phosphates form a new P−O−P bond, and which mirrors the nomenclature for anhydrides ...
The name pyrophosphoric acid was given by a "Mr. Clarke of Glasgow" in 1827 who is credited with its discovery following the heating to red heat of a sodium phosphate salt. It was found that phosphoric acid when heated to red heat formed pyrophosphoric acid that was readily converted to phosphoric acid by hot water. [7]
Trimetaphosphoric acid (or cyclotriphosphoric acid), H 3 P 3 O 9 (or (HPO 3) 3, (–P(O)(OH)–O–) 3), a cyclic molecule with three acidic hydrogens. Forms the trimetaphosphate salts and esters. Metaphosphoric acid is a general term for phosphoric acids with a single cycle, (–P(O)(OH)–O–) n, whose elemental formula is HPO 3.
The phosphorus cycle is the biogeochemical cycle that involves the movement of phosphorus through the lithosphere, hydrosphere, and biosphere.Unlike many other biogeochemical cycles, the atmosphere does not play a significant role in the movement of phosphorus, because phosphorus and phosphorus-based materials do not enter the gaseous phase readily, [1] as the main source of gaseous phosphorus ...
Phosphorus oxoacid; Pyrophosphoric acid This page was last edited on 29 June 2024, at 18:18 (UTC). Text is available under the Creative Commons ...
Phosphoric acid (orthophosphoric acid, monophosphoric acid or phosphoric(V) acid) is a colorless, odorless phosphorus-containing solid, and inorganic compound with the chemical formula H 3 P O 4. It is commonly encountered as an 85% aqueous solution, which is a colourless, odourless, and non-volatile syrupy liquid. It is a major industrial ...
Serine in an amino acid chain, before and after phosphorylation. In biochemistry, phosphorylation is the attachment of a phosphate group to a molecule or an ion. [1] This process and its inverse, dephosphorylation, are common in biology. [2] Protein phosphorylation often activates (or deactivates) many enzymes. [3] [4]