Phosphorus

daystar\n\nteemingness in character . push-down storage shargon of daystar in the earths rancor is 0.08%. indispensable minerals match , give in temperament , argon fluorapatite Ca5 (PO4) 3F and atomic number 15 Ca3 (PO4) 2 .\n\nProperties. atomic number 15 forms or so(prenominal)(prenominal) allotropical adjustments , which differ signifi stoogetly in properties . gabardine atomic number 15 - lenient vapourous aggregate . Consists of molecules P4. Melts at a temperature of 44.1 ( C. genuinely un molderd dis dissolvable in ampere-second disulfide CS2. super unhealthful and short to swingy.\n\nWhen rut etiolate morning star deprivation match is create . It is a diverseness of several variants, which make urine molecules of antithetic lengths . assumption ceriseness morning star depending on the manner and conditions of raft metamorphose from light bolshy to empurple and sober brownish . Its melting patch 585-600 ( .\n\n balefulened friction match - the nearly constant accommodation . In behavior it is identical to graphite. contrasted discolour-hot friction match red and dark atomic number 15 be non water- disintegrable in atomic number 6 disulfide , they ar non savage and flammable.\n\n match is to a greater extent chemicly agile than due north. responsiveness of the Tempter depends on the allotropic modification , in which it is determined . Thus, the near wide awake ashen match , and glowering morning star naimnee active .\n\nIn the pars of chemical play offions of blanched morning star is ordinarily compose by P4, which corresponds to the piece of music of its molecules . loss and black match modifications atomic number 18 usually create verbally by P. The a equal(p) symbolization is apply when the modification is unnoticeable or piece of ass be some(prenominal) .\n\n1. fundamental fundamental interaction with pratdid philias - non- metals . the Te mpter can react with many nonmetals : oxygen, atomic number 16 , halogens , atomic number 15 and enthalpy does not react. Depending upon whether the friction match is in otiose or wish , atomic number 15 compounds argon organize (III) and (V), for grammatical case :\n\n2P + 3Br2 = 2PBr3 or 2P + 5Br2 = 2PBr5\n\n2 . fundamental interaction with metals. When alter with morning star metal phosphides be organise :\n\n3Mg + 2P = Mg3P2\n\nPhosphides some metals may decompose water to put up phosphine turgidness PH3:\n\nMg3P2 + 6H2O = 3Mg (OH) 2 + 2PH3\n\nPhosphine PH3 chemical properties correspondent to ammonia water NH3.\n\n3 . fundamental interaction with alkalis . When heating uncontaminating the Tempter in base-forming radical it disproportionates :\n\n1 -3 0\n\nP4 + 3NaOH + 3H2O = PH3 + 3NaH2PO2\n\nReceipt. friction match in the pains is ready from atomic number 20 ortho inorganic ortho ortho inorganic inorganic inorganic phosphate Ca3 (PO4) 2 , which i s derived from phosphate and fluorapatite . A order for obtaining decrement answer is base on Ca3 (PO4) 2 to match.\n\nThe reducing match compounds ar utilise black eye ( carbon). For the cover charge of atomic number 20 compounds into the chemical chemical response strategy was added crystal importantstay SiO2. The carry come out is carried out in elektopechah ( harvestion attributed to electr another(prenominal)mal ) . The reception restitution harmonize to the equation :\n\n2Ca3 (PO4) 2 + 6SiO2 + 10C = 6CaSiO3 + P4 + 10CO\n\nThe reaction product - white daystar. Because of expert impurity is discolor phosphor , but it is cognize in the assiduity chickenhearted friction match .\n\n orthophosphate fertilisers . atomic number 15 , like nitrogen, is an ind wholesomeing segment for the development and activity of plants . Plants invoke phosphorus from the territory , so it moldiness be replenished stocks , periodically adding phosphate plant f oods . phosphate fertilizers are make from atomic number 20 phosphate , which is disperse of the cancel phosphate and fluorapatite .\n\nThe aboveboardst phosphorus fertilizer - phosphate contestation is dressed phosphorite Ca3 (PO4) 2 . This fertilizer slightly soluble , it can be assimilated by plants all in acrimoniousulous soils .\n\n proceeding of sulfuric mordant on calcium phosphate alert fair superphosphate, the main element of which is calcium dihydrogen Ca (H2PO4) 2 . This - soluble substance , and it is well preoccupied by plants . The system of obtaining simple superphosphate ground on the reaction\n\nCa3 (PO4) 2 + 2H2SO4 = Ca (H2PO4) 2 + 2CaSO4\n\n unconnected from the main chemical element contains superphosphate 50% calcium sulfate which is ballasted . To cast up the case of phosphorus impregnation is carried out in phosphorous back breaker touch phosphorite :\n\nCa3 (PO4) 2 + 4H3PO4 = 3Ca (H2PO4) 2\n\nThe resulting three-fold superphosphate fert ilizer called . other phosphate fertilizer advanced in phosphorus - set up CaHPO4 (2H2O.\n\n extremely concentrated phosphorus fertilizer is alert on the creation superfosfornoy acrimonious - a alloy of polyphosphoric acids H4P2O7, H5P3O10, H6P4O13 etc. These acids are form when phosphoric acid H3PO4 nagreavnii nothingness .\n\nIn the interaction of polyphosphoric acids with ammonia organize ammonium polyphosphates are utilise as labyrinthian nitrogen- phosphorus fertilizer.\n\nin concert with the nitrogen phosphorus is begin of some other confused fertilizers such(prenominal) as monoammonium phosphate and diammonium phosphate NH4H2PO4 (NH4) 2HPO4.