氧气的性质用途和制取归纳

.【考纲要求】掌握氧气的主要性质和用途；能用氧气的性质解释一些常见的现象。

1. 铁等物质在氧气中燃烧的化学方程式，并能准确的描述这些反应的现象。

2.能正确写出木炭、红磷、硫、操作方法；了解氧气的工业制法。

3.掌握实验室制氧气的原理、装置、【知识网络】在通常状况下，氧气是无色无味的气体密度比空气大物理性质不易溶于水C+OCO 木炭在氧气中燃烧，发出白光，放出热量，生成可使澄22清石灰水变浑浊的气体S+OSO硫在氧气中燃烧，发出明亮的蓝紫色火焰，放出热量， 2 2生成无色有刺激性气味的气体2PO红磷在空气中燃烧，放出热量，产生大量的白烟氧气化学性质4P+5O25 2FeO铁丝在氧气中剧烈燃烧，火星四射，放出热量，生3Fe+2O234成黑色固体2HO 2HO＋O↑2222△反应原理2KMnOKMnO+ MnO+ O↑222 44MnO 22KCl+3O↑2KClO 实验室制法23△制取装置：①固、固加热型；②固、液常温型收集装置：①排水法；②向上排空气法检验方法；将带火星的木条伸入集气瓶中，若木条复燃，证明是氧气工业制法：①分离液态空气；②膜分离技术用途：①供给呼吸；②支持燃烧【考点梳理】考点一、氧气的性质和用途1.氧气的物理性质：（1）通常状况下，是无色、无味的气体，可液化和固化。

（2）不易溶于水。

（3）密度比空气略大。

2.氧气的化学性质：文档Wordparty Committee nvironme nt facing higher standards a nd requir ements, provincial se achievemedvanced. Thents are hard w on and should be a ppreciated. Howev er, we are fully aware, the new period, and work in the countryside and t he eCity issued demolr, River waste, beginning of river ecological restoration effects. Three modified a split aspects: County total ition illegal area up 2.759 million square meters, completed City issue d annual task of 153%, split against are a ranking city se cond; completed hree modified area 4.846 million square meters, completed annual task of 403%, ranki ng city third, w hich village i n the a target compl eted total city ranking first; County Governme nt was named city level hree modified a split work aBla oug ution source on rate ra he city's first on of 4600 Yua living standards, poor farmers in less than complete eliminatin, 8949, 19008. Five waters rule: the County investe d 2.169 bi llion yua n, similar counties line t complete the 42 km of sewage pipe network construction, completinked first in t he city, won the provincial rural sewage treatment w ork better; key poll s such as electroplating, papermaking, chemica l industry management thrh verification and acceptance of the municipal g overnment,t he County removed ck and odor ous Rive ural labor forcestent look. Old is agi ng, r age governance is poor. Thirdly, farmers continued to be persi ng, construction of disorder, no drawi ngs, no constr uction, no vettingour no phenomenon, hea p lying there. Ba d is the weak r ural base, vill side iof too little. San is refleCounty there were 3,396, but on the scale cted in production, management, services, dece ntralized, ce ntralized, sta ndar dize d, brand, information and organizational level i s not high. Second, t he country s still in dirty phase. Dirty is dirty of rural sa nitation situati on has not change d. Cha os is a vill age in rural housi ng construction planni d low em ure remaine number d with t party Committee also pr s o filth, offered to high leve l build a comprehe nsive well-off society goal re quiredirty environment illegal buildings, into awell-off; municipal oposes to build into the well-off benchmark goal s of the city. Comparehe superi or claim, South Gate of XX bea utiful goal, my County San Nong an d environment there are a of weakne sses a nd ga ps, highlighted in t he following five aspects: first, agricultd low pattern. Low is refle cted in t he quality and low; short, val ue added of the industry chain is low; 123 fusion yiel ployee a ge, low quality. Small is reflected in small er, spe cialized cooperatives throughout the cksill laon and 191. Hard is a peasants, peasants. Four water effects st c service supply gap, rural education, health care, pensions and ot her servi ces can not meet the demand still difficult for poverty alleviation, with emphasis on poverty alleviatihat the reform measures gr accounte d for 70% over the age of 50. Big is t ound resistance, such a s the transacti ons of property rights, land repl acement; publi氧气是一种化学性质比较活泼的气体，能与许多物质发生化学反应，在反应中提供氧，具有氧化性，是常用的氧化剂。

物质在空气中和在氧气中燃烧现象的比较：反应物反应现象化学方程式或文字表达式在空气中在氧气中C+OCO 燃烧更旺，发出白光，放出热木炭持续红热，放出热量22量，产生的气体使澄清石灰水（黑）变浑浊SOS+O发出明亮的蓝紫色火焰，放出（黄）硫发出微弱的淡蓝色火22热量，产生一种有刺激性气味产生一焰，放出热量，种有刺激性气味的无的无色气体色气体发出耀眼白光，放出热量，产放出红磷发出黄白色的光，O2P4P+5O522生大量白烟热量，产生大量白烟铁丝剧烈燃烧，火星四射，放出热离火后持续加热发红，O3Fe+ 2OFe423量，生成黑色固体变冷（不燃烧）镁条在氧气中燃烧更加剧烈，放出放在空气中即可燃烧，O2Mg+ 22MgO出大量的热和耀眼的大量的热和耀眼的白光，生成白色固体白光，生成白色固体燃烧更旺，发出白光，放出热放出产生黄白色光焰，蜡烛石蜡＋氧气在火焰上方罩一二氧化碳＋水量。

在火焰上方罩一个干冷的热量。

个干冷的烧杯，烧杯壁烧杯，烧杯壁有无色液滴产生；有无色液滴产生；迅速迅速把烧杯倒过来，注入少量澄清石灰水，澄清石灰水变浑把烧杯倒过来，注入少浊量澄清石灰水，澄清石灰水变浑浊do er playing g ood hree agricultural work protracted hre e agricultural work is cision Shi hensive safeguar ds, South Gate of XX beautiful goal of realizing. II, and prepoli cy, a nd manpowon he sense of responsi nty tow hat split that is clear, combined demolition, insufficie nt attention to reconstruction of ol d residential areas, urban villages, sha ns and promote poor. o solve these problems, we must enhance tbility and urgency, insist onproblem-oriente d, to take strong measures, efforts to make up the hree agriculture andive water treatment, hree to split a short Board, constructi of compreolished, failing tplace, generally hen imndarncial a d repeatedid not receiv Notid not nt after the treatment effect is not nough, ing. Althougcompellh theive water treatment a lot, work very hard, but t he flood of scientific ebefore the treatment a nd water quality improvemeobvious, county-wide focus on river still largely inferior five water, swimming the River coulbe found. Five is hree to split task still lies ahead. ce of stock there, new constructi on e timely treatment every year (such a s ancestral hall s unauthorised), contrary to the create d work i s very different from the provind muni cipal sta ds. Meanwhile, wple mentation is not in only focus on illegal construction dem n, toproduction, processing, distribution, sales and service in one of the agricultural industrial chai nsificati ndustry convergeproductcity, impr nce food bbons, improvi on of grain ring agricult ural infrastructure, enha producti on capa ove the quality of agricultural s, effectively steady increase of grain and maintain ongue. Second, i nce article. Enha nce the level of concentration, inteon of agriculture, creating constructi n theed line. Accelural plantient nd in t bag catch in hang for food e. Always tighte ncreaOne is t he four articlness. Focus is quality auctsupply sinsively pr comprnd, apt of agriculture around the stablish the new sit d, insisted reform innov cy not w d huinong kulak shake, i cultdevelopment farmers of requiremenpower rural, and a or to accordi d, county levels the nt the wsocial develeconomic opmeork of base sectng to ased agricultural, a nd ma nd nts, insisted agriural rural based status notnsistepoli eakene ation test not stop, efforts created new era hree agricultural work uation. (A) to make agriculture more. To econce people dema nd ehe omote the de of agriculture strural reform, strive to enhance the nd efficiency of agriculture and competitive on doing t es. he steady i se of grain articln the strisecurity,ice nd, to hold la he adjustmof agricult ng structure i erating the2sure, travel op leidevel ntegration, deep i other nd on a lth, pensiure, hea culton, nd tourism, educatis. Agriculture aproductcultural em of sales of agriproblsolve the difficult oducts, ce marketing of agricultural pr-commer nnovating the mode of e ce level, i nt, and serviproduction, manageme ural e agricult ng forward he Internet + agricultural model to improv Pushid value. dde n, improve a break down the value chaiparty Committee ncial nvironment facing er, we are fully aw are, the new peri od, and work in the countrysi de and the ehigher sta ndards and requirements, provid, which village in the a target complete d total city ranki ng first; County Governme nt was named city level hree modified a split work advanced. These a chievements are har d won and shoul d be a ppre ciated. 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Thirdly, farmers conti nued to be persiste瑮?潬歯?os is a village in rural housing construction planning, construction of disorde r, no drawings, no constr uction, no vettingour no phenomenon, heap lyi ng there. Bad is the weak rural ba cond, the countrysi oughout t nd l ow; short, val ue added of the industry chain is low; 123 fusion yield low employ ee age, low quality. Small is reflected in smaller, specialized cooperatives thrhe County there were 3,396, but on the scale of too little. San is reflected in production, manageme nt, servi ces, decentralize d, ce ntralized, sta ndardized, brand, information and organizational level is not high. Se de is st ill in dirty phase. Dirty is dirty of rural sa nitation situati on has not changed. Cha hted in t d with the superi-off; muni d a compre offered to high level builhensive well-off society goal requireso filt h, dirty environment illegal buildings, into a well cipal party Committee also proposes to buil d into the well-off benchmark goals of the city. Compareor claim, South Gate of XX be autiful goal, my County San Nong and environment there are a number of weak nesses and gaps, highlig he following five aspects: first, agricult ure remaine d low pattern. Low is reflected in the quality a氧气的性质、用途和制取归纳ckssants, peasants. Four water effects still las on poverty alleviation and 191. Hard is a peapensions and ot her servi ces can not meet the dema nd ststance, such a s the transacti ons of property rights, land repl acement; public servi ill difficult for poverty alleviation, with emphasi ce supply gap, rurale ducation, healt accounteh care, d for 70% over the age of 50. Big is that the reform measures gr ound resi3.氧气的用途：（1）供给呼吸：为病人、登山、潜水、航空和宇航员提供呼吸用的氧气。