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利用具支试管、橡胶管、直角导管、集气瓶、烧杯等常见实验仪器对氯酸钾和二氧化锰制备氧气的实验装置进行了改进,增强了实验的直观性和简易性,更加利于教师在课堂上演示实验。
The experimental apparatus for preparing oxygen from potassium chlorate and manganese dioxide was improved by using the common experimental instruments such as test tube, rubber tube, right angle catheter, gas cylinder and beaker, which enhanced the intuition and simplicity of experiment and facilitated the teachers’ On the demonstration experiment.