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第九课氯化物、漂白粉本课目的:使学生认识氯化物和漂白粉的性质及用途。在检查学生知识以後,讲解氯化物。向学生提问并讨论氯化物的制法,作出给论:金属与气直接化合、金属及其氧化物和氢氧化物与盐酸作用,易挥发性酸生成的盐与盐酸作用、盐与氯化物的复分解作用,都能生成氯化物。写出方程式。其次讨论氯化物的性质,并加以提示,作出结论:溶性氯化物与浓硫酸作用生氯化氢,被氧化或电解生氯,与硝酸银作用生白色氯化银沉淀不溶於
Lesson 9 Chloride, Bleaching Toner Objectives: Make students aware of the nature and use of chloride and bleach. After checking the students knowledge, explain the chloride. Ask students questions and discuss the preparation of chlorinated compounds and make presentations: Direct combination of metals and gases, interaction of metals and their oxides and hydroxides with hydrochloric acid, salts with hydrochloric acid, and salts of chloride and chloride Metathesis can produce chloride. Write the equation. Second, discuss the nature of the chloride, and be prompted to conclude that the role of soluble chloride and concentrated sulfuric acid raw hydrogen chloride, oxidation or electrolysis of chlorine, and silver nitrate role of raw white silver chloride precipitate insoluble