中学化学常见实验成功的条件探讨

Conditions of Success in High School Chemistry Experiments

对常用酸性高锰酸钾溶液的配制、重金属盐——CuSO4、Pb（Ac）2溶液沉淀蛋白质实验、酚酞溶液的配制、氯水的制备、KI淀粉试纸制备、Fe（OH）3胶体制备等提供了实验事实，并做出了新的判断，以提高中学化学实验教学的质量。

This paper discussed the conditions of success in seven experiments： preparation of acidic potassium permanganate solution, phenothalin solution, chlorine water, KI starch test paper and Fe（OH）3 colloid, precipitation of proteins with CuSO4 and Pb（Ac）2solution, and pro- vided guidance for high school chemistry experiment teaching.