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现行初中化学教材都设置了选用较活泼金属做置换反应的实验,如铝与硫酸铜溶液的反应,但是铝与硫酸铜的反应速率会因铝片的材质以及硫酸铜的浓度的不同而受到影响。因此不少教师考虑到固液相反应的氯离子效应,会用氯化铜来替代硫酸铜,以使反应速率取得理想的效果。从理论上讲,铝与氯化铜溶液反应是个常规实验,实验难度不大,可以很容易地推测该反应的实验现象为随着
Current junior high school chemistry textbooks are set up to use more active metal replacement reaction experiments, such as aluminum and copper sulfate solution reaction, but the aluminum and copper sulfate reaction rate will be affected by the aluminum sheet material and the concentration of copper sulfate affected . Therefore, many teachers take into account the chloride ion effect of solid-liquid reaction, copper chloride will be used instead of copper sulfate, so that the reaction rate to achieve the desired effect. In theory, aluminum and copper chloride solution reaction is a routine experiment, the experiment is not difficult, it can be easily assumed that the experimental results of the reaction with the