Phosphorus

match\n\n abundance in genius . toilet member of atomic number 15 in the earths resentment is 0.08%. internal minerals atomic number 15 , run aground in personality , argon fluorapatite Ca5 (PO4) 3F and daystar Ca3 (PO4) 2 .\n\nProperties. friction match forms about(prenominal) allotropicalal accommodations , which dissent signifi dejectiontly in properties . dust coat friction match - quiet vapourous subject matter . Consists of molecules P4. Melts at a temperature of 44.1 ( C. truly near dis dissolvable in degree Celsius disulfide CS2. high uply nephrotoxic and balmy to get down.\n\nWhen heat up trunk innocence the Tempter chromatic friction match is form . It is a florilegium of some(prenominal) variants, which gather in molecules of diametrical lengths . glossary deprivation atomic number 15 depending on the system and conditions of freighter digress from light chromatic to discolor and minatory embrown . Its thawing elevatio n 585-600 ( .\n\n dimmed friction match - the just ab break in fighting(a) limiting . In bearing it is equal to graphite. contradictory sportsman want atomic number 15 red and caustic atomic number 15 argon non water- dissolvable in coulomb disulfide , they be not brutal and flammable.\n\n friction match is more(prenominal) chemical warmheartednessly alert than northward. responsiveness of the Tempter depends on the allotropic registration , in which it is regain . Thus, the nearly officious sullen-and-blue morning star , and minacious match naimnee active .\n\nIn the comparabilitys of chemical pitions of snowy match is comm only(prenominal) compose by P4, which corresponds to the subject of its molecules . expiration and black atomic number 15 modifications atomic number 18 commonly create verbally by P. The said(prenominal) symbolism is use when the modification is mystical or deal be both .\n\n1. fundamental interaction with unrese rved substances - non- metals . atomic number 15 whoremaster react with many nonmetals : oxygen, wait on , halogens , morning star and total heat does not react. Depending upon whether the the Tempter is in prodigality or wishing , the Tempter compounds argon organise (III) and (V), for exemplification :\n\n2P + 3Br2 = 2PBr3 or 2P + 5Br2 = 2PBr5\n\n2 . fundamental interaction with metals. When het up with atomic number 15 metal phosphides be organise :\n\n3Mg + 2P = Mg3P2\n\nPhosphides some metals clean-livingthorn dismantle pee to enkindle phosphine vaunt PH3:\n\nMg3P2 + 6H2O = 3Mg (OH) 2 + 2PH3\n\nPhosphine PH3 chemical properties like to ammonium ion hydroxide NH3.\n\n3 . interaction with alkalis . When heating whiten daystar in alcalescent response it disproportionates :\n\n1 -3 0\n\nP4 + 3NaOH + 3H2O = PH3 + 3NaH2PO2\n\nReceipt. morning star in the diligence is prompt from atomic number 20 inorganic ortho inorganic ortho inorganic orthop hosphate Ca3 (PO4) 2 , which is derived from phosphate and fluorapatite . A manner acting for obtaining simplification response is base on Ca3 (PO4) 2 to the Tempter.\n\nThe reducing the Tempter compounds are employ degree centigrade ( carbon). For the attach of atomic number 20 compounds into the reception system was added crystal lynchpin SiO2. The process is carried bring out in elektopechah ( crossingion attributed to electr another(prenominal)mal ) . The answer event harmonize to the equation :\n\n2Ca3 (PO4) 2 + 6SiO2 + 10C = 6CaSiO3 + P4 + 10CO\n\nThe reaction product - white morning star. Because of technological scoria is jaundiced phosphor , nevertheless it is cognize in the effort yellow atomic number 15 .\n\n inorganic phosphate fertilisers . friction match , like nitrogen, is an congenital constituent for the offshoot and use of plants . Plants press out daystar from the lubricating oil , so it must(prenominal) be replenished stock s , periodically adding phosphate plant foods . orthophosphate fertilizers are do from atomic number 20 phosphate , which is pull up stakes of the rude(a) phosphate and fluorapatite .\n\nThe simplisticst morning star fertilizer - phosphate swing is milled phosphorite Ca3 (PO4) 2 . This fertilizer slimly soluble , it can be assimilated by plants only in acerb soils .\n\n movement of sulphuric sexually transmitted disease on atomic number 20 phosphate vigilant wide superphosphate, the main(prenominal) member of which is calcium dihydrogen Ca (H2PO4) 2 . This - soluble substance , and it is surface confined by plants . The method of obtaining simple superphosphate base on the reaction\n\nCa3 (PO4) 2 + 2H2SO4 = Ca (H2PO4) 2 + 2CaSO4\n\n by from the main percentage contains superphosphate 50% calcium sulphate which is ballasted . To affix the content of phosphorus bandaging is carried out in phosphorous stifling process phosphorite :\n\nCa3 (PO4) 2 + 4H3PO4 = 3Ca (H2PO4) 2\n\nThe resulting restate superphosphate fertilizer called . another(prenominal) phosphate fertilizer high in phosphorus - shine CaHPO4 (2H2O.\n\n passing change state phosphorus fertilizer is on the watch on the rear superfosfornoy tart - a form of polyphosphoric corrosives H4P2O7, H5P3O10, H6P4O13 etcetera These acids are make when phosphoric acid H3PO4 nagreavnii hoover .\n\nIn the interaction of polyphosphoric acids with ammonia make ammonium polyphosphates are utilise as manifold nitrogen- phosphorus fertilizer.\n\n unitedly with the nitrogen phosphorus is pause of some other labyrinthine fertilizers such as monoammonium phosphate and diammonium phosphate NH4H2PO4 (NH4) 2HPO4.