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1、(精品)九下化学知识点归纳气体的制取 知识摘要 1.制取气体的原理 1.1实验室制取气体 实验室制取气体 原料 原理 高锰酸钾 2KMnOKMnO+MnO+O? 42422过氧化氢溶液和二氧化锰 2HO2HO+O? 2222氧气 氯酸钾和二氧化锰 2KClO2KCl+3O? 32二氧化碳 大理石或石灰石、稀盐酸 CaCO+2HCl=CaCl+HO+CO? 3222氢气 锌粒和稀硫酸 Zn+HSO=ZnSO+H? 24421.2工业制取气体 工业制取气体 原料 方法 氧气 空气 分离液态空气 二氧化碳 石灰水 CaCOCaO+CO? 32氢气 水 2HO2H?+O? 2222.发生装置的确定 2
2、.1实验室里制取气体的装置包括发生装置和收集装置两部分。 2.2确定气体发生装置时应从两个方面考虑:?反应物的状态;?反应的条件。 其具体装置如下图所示: 反应物是固体和液体且不需加热 反应物是固体且需加热 2.3固 + 固加热注意事项: (1)加热时，先预热且应用外焰加热 (2)试管口应略向下倾斜 (3)药品应平铺于试管底部 At present, we would like to take the opportunity of maintaining party members progressiveness education activity, to strengthen and im
3、prove the Office itself. First, to strengthen ideological building, forge basic quality. Ideology construction is the important content of the construction of the contingent of cadres. Government offices at all levels to put ideological construction in construction from start to finish top of the ef
4、fort to forge a political reliability, faith, quality excellent cadres. To strengthen the sense of political. For the Office, is to insist on responsibility and consistency under, firmly implement the Party Central Committee and the State Councils policies and decisions indicates that premise, two g
5、uarantees. Is to ensure that the municipal party Committee and the implementation of the decisions and arrangements of the municipal government. Municipal Government made major policy decisions, we must unswervingly carry out, inspection tells us this is not a political problem, at this point, every
6、 one must unequivocally. Second, ensure that the views and uninterrupted. To prevent and correct below, above difficult to hear calls for obstruction of, really know what grass-roots do, what are people thinking, to provide government leaders with timely, accurate, and reliable information for decis
7、ion-making. To strengthen the overall situation. At present, development is the overall situation of the work of the city, any organization, any sector, any person can deviate from this Centre. The County (district), the Office should focus on the big picture, from their workPractical, departments,
8、functions, characteristics, and find its location, clear focus and direction of the work, enhance work initiative, highlights the important role of the Office in the serving, integrated services play in the overall coordination function, embody the work level. To strengthen the consciousness of life
9、long learning. To strengthening learning, timely charging, put strengthening politicale and flexibility, and strive to achieve both the overall situation, careful and thoughtful and methodical, grasp a sense of propriety. Secondly, we should further improve the meeting. Make great efforts to streaml
10、ine Conference under transactional activities and leaders, so leaders can free up more time to catch events, about events. On the subject of well-chosen, check the material carefully for the Conference, the whole process of the Conference services, standardization of work. Third, we should further i
11、mprove the logistics service. Carefully implement Premier Wen Jiabao management, security, service, clean, efficient, consistent, become directives, according to deepen reform, strengthen management and serve the overall interests, team cohesion, improve service, increase efficiency goals, to scient
12、ific management and social services as direction, intensify administrative reform, and gradually establish a highly efficient, well-coordinated and standardized logistics management system. Efforts to reduce administrative costs, strengthen the management of funds, assets, and standard position-rela
13、ted consumption, perfect reception system for organs and provides powerful protection and quality of life for workers and staff services. Third, strengthening quality, top-notch, image and strengthen the system of Government Office construction is not only a hub for the work of the Office, is the im
14、age window. If your Office work, poor image, not only affects theSector as a whole, but will also affect the overall image of the Governmentemployment, business, money as the core, conscientiously the public of important matters and human, financial, material, notOff deepening public content. To bui
15、ld a long-term mechanism of open Government to ensure open government institutionalization, standardization and regularization. According to the arrangements of the Municipal Government this year to full implementation of first asking duty system in the city and a handle system, 12 pilot departments
16、 of the Municipal Government to determine, in accordance with the pilot scheme, seriously implement Exchange in early April; the County (district) and the pilot departments should formulate as soon as possible practical implementation of the program, at both the city and county level in full swing in the first half. 8, solid and meticulous, improved efficiency, daily Government Affairs Services. Coordination, meetings, logistic
