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化学是以实验为基础的学科,实验是化学的最高法庭。一般来说,根据实验现象得出的结论是可靠的。但是,化学反应又是复杂的,具有很大的不确定性,正如清华大学宋心琦先生所说“反应现象是由化学反应条件所决定的”。同样的反应在不同的条件下可能产生截然不同的现象,表面现象未必就是事实真相。一、Fe～(3+)检验中的实验现象人教版高中《化学1》61面中写道:含有Fe～(3+)的盐溶液遇到KSCN溶液时变成红色,我们可以利用这一反应
Chemistry is based on the experimental discipline, the experiment is the supreme court of chemistry. In general, conclusions based on experimental phenomena are reliable. However, the chemical reaction is complicated and has great uncertainty. As Song Xinqi of Tsinghua University put it, “The reaction phenomenon is determined by the chemical reaction conditions.” The same reaction in different conditions may have a completely different phenomenon, the surface phenomenon is not necessarily the truth. First, the experimental results of Fe ~ (3 +) test PEP teaching “Chemistry 1” 61 wrote: salt solution containing Fe ~ (3+) becomes red when it encounters KSCN solution, we can use this A reaction