在准备和进行“硫化氢和氢硫酸的制法及其性质”一堂课的时候,遇到了较大的困难,绝大多数同学都不欢迎这种坏鸡蛋的臭味,虽然在事先也作了一些教育可是收效并不大,课堂纪律仍会受到影响。为了克服这些困难,尽量减少这种恶臭气体在空气中的逸散。我把硫化氢气体的制法和性质和氢硫酸的性质演示连在一起(如附图)这种边教边实验的方法既方便又省时, When preparing and conducting a course entitled “Method and Nature of Hydrogen Sulfide and Hydrogen Sulphate”, we encountered great difficulties. Most of our students did not welcome the bad smell of such bad eggs. Although they were prepared beforehand However, some education is not effective, classroom discipline will still be affected. In order to overcome these difficulties, minimize the fugitive gases in the air escape. I linked the preparation and characterization of hydrogen sulphide gas with the demonstration of the nature of hydrogen sulphide (pictured here). This is a convenient and time-saving experiment,