离子的定性分析所涉及到的鉴定反应,绝大部分都具有灵敏、选择性好、快速之特点,其操作一般采用半微量分析技术,因此,在实验中介质的变化或外部环境的影响及操作试剂的用量,甚至所用仪器是否洁净等因素,都有可能引起实验现象的“异常”。通过定性分析化学实验教学的启示,对学生的科学创新思维的训练和培养,能起到重要的作用。 Qualitative analysis of ions involved in the identification of the reaction, the vast majority of sensitive, selective, fast features, the operation of the general use of semi-micro-analytical techniques, therefore, in the experiment medium changes or external environmental impact and operation The amount of reagents, and even the instruments used are clean and other factors, are likely to cause experimental phenomena “abnormal ”. Through the qualitative analysis of the enlightenment of chemistry experiment teaching, it can play an important role in the training and cultivation of students’ scientific innovative thinking.