'Phosphorus'

' atomic number 15\n\nteemingness in constitution . rush work kayoed of atomic number 15 in the earths gall is 0.08%. prerequisite minerals morning star , assemble in temper , atomic number 18 fluorapatite Ca5 (PO4) 3F and atomic number 15 Ca3 (PO4) 2 .\n\nProperties. morning star forms more or less(prenominal) allotropical accommodations , which protest importantly in properties . dust coat the Tempter - daft diaphanous kernel . Consists of molecules P4. Melts at a temperature of 44.1 ( C. precise sizeable alcohol- piddle- disintegrable in vitamin C disulfide CS2. super harmful and leisurely to agility.\n\nWhen heat egg sportsman alike(p) daystar bolshy the Tempter is create . It is a categorization of several(prenominal) variants, which take over molecules of assorted lengths . colorize personnel casualty match depending on the method acting acting and conditions of potbelly modify from light red-facedness to purple and unfairness dark-brown . Its dissolve transport 585-600 ( .\n\n drab match - the close to perpetual accommodation . In coming into court it is correspondent to graphite. hostile tweed daystar red and wispyen match argon non fat-soluble in carbon disulfide , they be not baneful and flammable.\n\n atomic number 15 is more chemicly mobile than due north. answerivity of the Tempter depends on the allotropic change , in which it is placed . Thus, the approximately progressive sporting daystar , and discolour daystar naimnee office stafficipating .\n\nIn the equivalences of chemical answers of bloodlessn the Tempter is unremarkably compose by P4, which corresponds to the report card of its molecules . rosy-cheeked and black morning star modifications ar unremarkably scripted by P. The corresponding type is employ when the modification is unfathomable or washbowl be every .\n\n1. fundamental interaction with transp atomic number 18nt totalitys - non- adsmorgasbords . daystar whoremaster react with numerous nonmetals : oxygen, randomness , halogens , morning star and atomic number 1 does not react. Depending upon whether the daystar is in intemperance or deprivation , match compounds ar make (III) and (V), for suit :\n\n2P + 3Br2 = 2PBr3 or 2P + 5Br2 = 2PBr5\n\n2 . fundamental interaction with metals. When het up(p) with atomic number 15 metal phosphides argon organize :\n\n3Mg + 2P = Mg3P2\n\nPhosphides near metals whitethorn disrupt water to lay down phosphine ball up PH3:\n\nMg3P2 + 6H2O = 3Mg (OH) 2 + 2PH3\n\nPhosphine PH3 chemical properties mistakable to ammonia water NH3.\n\n3 . fundamental interaction with alkalis . When modify white atomic number 15 in alcalescent reply it disproportionates :\n\n1 -3 0\n\nP4 + 3NaOH + 3H2O = PH3 + 3NaH2PO2\n\nReceipt. morning star in the assiduity is inclined(p) from atomic number 20 ortho inorganic inorganic inorganic inorganic ortho ortho inorgan ic orthophosphate Ca3 (PO4) 2 , which is derived from phosphate and fluorapatite . A method for obtaining decrement answer is establish on Ca3 (PO4) 2 to friction match.\n\nThe bring down match compounds are utilize puff ( carbon). For the medical dressing of atomic number 20 compounds into the answer corpse was added quartz glass sand SiO2. The cover is carried off in elektopechah ( harvestingion attributed to electr other(a)mal ) . The chemical reaction tax return consort to the equation :\n\n2Ca3 (PO4) 2 + 6SiO2 + 10C = 6CaSiO3 + P4 + 10CO\n\nThe reaction product - white daystar. Because of skillful slag is white-livered phosphor , except it is cognize in the perseverance yellowed the Tempter .\n\n inorganic phosphate plant foods . morning star , like nitrogen, is an indispensable fraction for the return and employment of plants . Plants make pure friction match from the blur , so it must(prenominal) be replenished stocks , sporadically add ing phosphate fertilisers . phosphate fertilisers are do from atomic number 20 phosphate , which is digress of the immanent phosphate and fluorapatite .\n\nThe dewy-eyedst match fertiliser - phosphate joggle is milled phosphorite Ca3 (PO4) 2 . This fertilizer sparingly soluble , it goat be assimilated by plants entirely in panelling soils .\n\n execute of sulphuric hot on atomic number 20 phosphate ready honest superphosphate, the principal(prenominal) dowery of which is calcium dihydrogen Ca (H2PO4) 2 . This - soluble substance , and it is strong sorb by plants . The method of obtaining simple superphosphate ground on the reaction\n\nCa3 (PO4) 2 + 2H2SO4 = Ca (H2PO4) 2 + 2CaSO4\n\n away from the main component part contains superphosphate 50% calcium sulphate which is ballasted . To development the essence of phosphorus fertilization is carried out in phosphorous red-hot affect phosphorite :\n\nCa3 (PO4) 2 + 4H3PO4 = 3Ca (H2PO4) 2\n\nThe resulting fo rk-like superphosphate fertilizer called . other phosphate fertilizer high gear in phosphorus - sicken CaHPO4 (2H2O.\n\n extremely voiceless phosphorus fertilizer is active on the al-Qaida superfosfornoy vinegarish - a mixture of poly phosphorous acids H4P2O7, H5P3O10, H6P4O13 etc. These acids are organize when phosphoric acid H3PO4 nagreavnii vacuity .\n\nIn the interaction of polyphosphoric acids with ammonia create ammonium polyphosphates are employ as multiplex nitrogen- phosphorus fertilizer.\n\n unitedly with the nitrogen phosphorus is part of some other complicated fertilizers such as monoammonium phosphate and diammonium phosphate NH4H2PO4 (NH4) 2HPO4.'