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人教版高中化学选修5中《醛》中关于银镜反应是这样描述的:在洁净的试管中加入1 mL 2%的AgNO3溶液,然后边振荡试管边逐滴加入2%的稀氨水,至最初产生的沉淀恰好溶解为止。制得银氨溶液。再滴入3滴乙醛,振荡后将试管放在热水浴中温热,观察并记录实验现象。其表述简单明了,按其要求进行操作,成功率不高,直接影响了对乙醛还原性的验证。为了寻找乙醛银镜反应的合适条件进行了实验,得到了如下结论。
PEP 5 High School Chemistry Elective 5 “aldehyde” on the silver mirror reaction is described as follows: in a clean tube by adding 1 mL of 2% AgNO3 solution, and then while shaking the tube side by adding 2% diluted ammonia to The precipitate that was originally produced dissolved just right. Preparation of silver ammonia solution. Drops of 3 drops of acetaldehyde were added. After shaking, the test tube was placed in a hot water bath for warming. The experiment was observed and recorded. The statement is simple and clear, according to their requirements for operation, the success rate is not high, a direct impact on the verification of acetaldehyde reduction. In order to find the suitable conditions of acetaldehyde silver mirror reaction, we got the following conclusions.