论文部分内容阅读
Y型管结构简单,用途广泛,但在中学化学实验中很少使用,若能根据其结构特点,将其用于中学化学实验,可以设计出很多有价值的用法。下面介绍一组可以在Y型管中进行的化学实验。a.验证硝酸的强氧化性。浓硝酸和稀硝酸分别与铜反应是验证硝酸强氧化性的经典实验,用Y型管设计出如图1
Y-tubes are simple in structure and widely used, but they are rarely used in chemical experiments in middle schools. If they can be used in middle school chemistry experiments according to their structural characteristics, many valuable uses can be designed. Here is a set of chemical experiments that can be performed in a Y-tube. a. Verify the strong oxidizing properties of nitric acid. The reaction of concentrated nitric acid and dilute nitric acid with copper, respectively, is a classic experiment to verify the strong oxidizing ability of nitric acid.