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NH_4Cl(s)与Ba(OH)_2·8H_20(s)的吸热反应实验是新人教版高中化学必修2第二章第一节的实验2-2,很多同行对该实验做过改进,本着“化学来源于生活又服务于生活”“绿色化学”的理念,本文采用生活中常见的吸吸冰塑料软管、一次性塑料手套、气球等实验用品对该实验进行改进。一、实验目的依照新课程标准的要求,通过科学创新NH_4Cl(s)与Ba(OH)_2·8H_20(S)吸热反应的实验,避免氨气的排放,节约实验药品,消除实验污染。在教学过程中向学生渗透绿色化学理念。二、教学目标1.了解吸热反应。2.改进吸热反应的实验装置。
The endothermic reaction experiments of NH_4Cl(s) and Ba(OH)_2·8H_20(s) are the experiment 2-2 of the first section of the second edition of the Newcomer High School Chemistry Compulsory 2. Many colleagues have improved the experiment. Based on the concept of “chemistry comes from life and serves life” and “green chemistry”, this article adopts the common suction and ice-absorbing plastic hoses, disposable plastic gloves, balloons and other experimental articles in life to improve the experiment. . First, the experimental objectives in accordance with the requirements of the new curriculum standards, through the scientific innovation of NH_4Cl (s) and Ba (OH) 2 · 8H_20 (S) endothermic reaction experiments, to avoid ammonia emissions, save experimental drugs, eliminate experimental contamination. Infiltrate the students with the concept of green chemistry in the teaching process. Second, teaching objectives 1. Understand the endothermic reaction. 2. Experimental device for improving endothermic reaction.