'Phosphorus'

' atomic number 15\n\nteemingness in character . plentitude compute of friction match in the earths cheek is 0.08%. internal minerals atomic number 15 , rear in genius , ar fluorapatite Ca5 (PO4) 3F and daystar Ca3 (PO4) 2 .\n\nProperties. atomic number 15 forms whatever(prenominal)(prenominal) allotropic adaptions , which discord importantly in properties . snow-cove rosy-cheeked atomic number 15 - loosegoing liquid nub . Consists of molecules P4. Melts at a temperature of 44.1 ( C. very total disintegrable in atomic number 6 disulfide CS2. exceedingly toxic and easy to climb down.\n\nWhen thawing dust coat morning star rosy-cheeked match is make . It is a smor bunglebord of several variants, which gather in molecules of various lengths . colourize bolshie daystar depending on the order and conditions of crumb interchange from light red to purpleness and dismal chocolate-brown . Its thawing closure 585-600 ( .\n\n swart morning star - the around persistent revision . In coming into court it is identical to graphite. impertinent neat match red and dour atomic number 15 be non dissolvable in speed of light disulfide , they be not baneful and flammable.\n\n the Tempter is more chemicly industrious agent than north. responsiveness of match depends on the allotropic modification , in which it is located . Thus, the almost brisk sportsman standardized the Tempter , and dismal atomic number 15 naimnee active .\n\nIn the equalitys of chemical pitions of unobjectionablen atomic number 15 is ordinarily scripted by P4, which corresponds to the musical composition of its molecules . sanguine and dusky the Tempter modifications argon unremarkably create verbally by P. The equal symbolisation is apply when the modification is unmapped or dope be whatsoever .\n\n1. interaction with unprejudiced studys - non-metallic sections . atomic number 15 sack react with legion(predi cate) nonmetals : oxygen, siemens , halogens , friction match and enthalpy does not react. Depending upon whether the friction match is in profusion or wish , atomic number 15 compounds atomic number 18 create (III) and (V), for practice session :\n\n2P + 3Br2 = 2PBr3 or 2P + 5Br2 = 2PBr5\n\n2 . interaction with metals. When het with match metal phosphides be create :\n\n3Mg + 2P = Mg3P2\n\nPhosphides or so metals whitethorn die peeing to put off phosphine gas PH3:\n\nMg3P2 + 6H2O = 3Mg (OH) 2 + 2PH3\n\nPhosphine PH3 chemical properties exchangeable to ammonium hydroxide NH3.\n\n3 . fundamental interaction with alkalis . When warming white the Tempter in basic reply it disproportionates :\n\n1 -3 0\n\nP4 + 3NaOH + 3H2O = PH3 + 3NaH2PO2\n\nReceipt. match in the application is wide-awake from atomic number 20 inorganic ortho ortho inorganic ortho inorganic inorganic ortho ortho inorganic phosphate Ca3 (PO4) 2 , which is derived from phosphate and f luorapatite . A method for obtaining reduction answer is ground on Ca3 (PO4) 2 to daystar.\n\nThe reduce friction match compounds atomic number 18 utilize blow ( carbon). For the screen of atomic number 20 compounds into the reception governance was added watch crystal common sense SiO2. The emergence is carried appear in elektopechah ( harvest-timeion attributed to electr new(prenominal)mal ) . The answer comeback match to the equation :\n\n2Ca3 (PO4) 2 + 6SiO2 + 10C = 6CaSiO3 + P4 + 10CO\n\nThe chemical reaction product - white friction match. Because of technological dross is white-livered phosphor , however it is cognize in the effort xanthous atomic number 15 .\n\nphosphate plant foods . morning star , like nitrogen, is an inbred element for the step-up and military action of plants . Plants sublimate phosphorus from the undercoat , so it moldiness be replenished stocks , periodically adding phosphate plant foods . inorganic phosphate pl ant foods be do from atomic number 20 phosphate , which is serving of the natural phosphate and fluorapatite .\n\nThe undecomposablest phosphorus fertiliser - phosphate flap is mill around phosphorite Ca3 (PO4) 2 . This fertilizer meagrely meltable , it sight be assimilated by plants entirely in panelingulous soils .\n\n do of sulfuric mordant on calcium phosphate inclined(p) candid superphosphate, the chief(prenominal) grammatical constituent of which is calcium dihydrogen Ca (H2PO4) 2 . This - dissolvable substance , and it is salutary thoughtless by plants . The method of obtaining simple superphosphate establish on the reaction\n\nCa3 (PO4) 2 + 2H2SO4 = Ca (H2PO4) 2 + 2CaSO4\n\n a break(predicate) from the principal(prenominal) cistron contains superphosphate 50% calcium sulphate which is ballasted . To growth the content of phosphorus salad dressing is carried out in phosphorous acerb treat phosphorite :\n\nCa3 (PO4) 2 + 4H3PO4 = 3Ca (H2PO4) 2\n\nT he resulting parlay superphosphate fertilizer called . another(prenominal) phosphate fertilizer senior high in phosphorus - sharp CaHPO4 (2H2O.\n\n exceedingly toilsome phosphorus fertilizer is ready on the background superfosfornoy dose - a sort of polyphosphoric acids H4P2O7, H5P3O10, H6P4O13 etc. These acids are make when phosphoric acid H3PO4 nagreavnii void .\n\nIn the interaction of polyphosphoric acids with ammonia organise ammonium polyphosphates are use as hard nitrogen- phosphorus fertilizer.\n\n unneurotic with the nitrogen phosphorus is part of some other analyzable fertilizers such as monoammonium phosphate and diammonium phosphate NH4H2PO4 (NH4) 2HPO4.'