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根据我们在实验教学中的体会,要做好该项实验,应着重在以下几个方面下功夫: 1、准确地配制硬脂酸苯溶液,而且溶液的浓度应适当的稀一些。有关分析天平的使用技能不是高中生所需学会和掌握的,且摩尔浓度溶液的配制技能在下一个学生实验(学生实验三)中才能开始学习,因此,由教师精确地配制此种溶液是十分必要的。基于大部分高中学校实验设
According to our experience in experimental teaching, to do this experiment, we should focus on the following aspects: 1. Accurately prepare stearic acid benzene solution, and the concentration of the solution should be appropriately diluted. The skills related to analytical balances are not required for high school students to learn and master, and the preparation skills for molar concentration solutions can only be learned in the next student experiment (student experiment 3). Therefore, it is very necessary for teachers to accurately formulate such solutions. of. Based on the experimental design of most high school schools