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在现行高中化学必修一中,氨气的喷泉实验是高中化学教材中一个很有趣的演示实验,高考也经常考查与喷泉实验有关的知识,并且考查的方式新颖多样。当教师在课堂上演示喷泉实验时,学生无不充满好奇,在教师的讲解下,学生虽然初步明白了喷泉实验的形成过程:利用氨气在水中溶解度很大(体积比1∶700)的性质,在短时间内烧瓶中的气压减小,使外
In the current high school chemistry compulsory one, the ammonia fountain experiment is a very interesting demonstration experiment in high school chemistry textbook, college entrance examination also often examines the fountain experiment relevant knowledge, and examines the way novelty diverse. When the teacher demonstrates the fountain experiment in the classroom, the students are all curious. Under the teacher’s explanation, though the students initially understand the formation process of the fountain experiment: the use of ammonia in the water solubility (volume ratio of 1: 700) In a short period of time the pressure in the flask is reduced to the outside