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银镜反应通常使用银氨溶液与含有醛基的物质,在碱性条件且水浴约60℃时发生还原反应,生成单质银;而北京卷高考题使用氢氧化钠溶液制取银镜,这说明银镜反应不一定在有醛基参与时才能进行。因此,笔者设计以下实验,旨在研究还原剂的种类、还原剂的浓度、反应时间、反应温度对还原生成银镜的影响。一、实验材料1.实验选用的还原剂。笔者设计的实验主要选用含醛基的化合物,此外还尝试在氢氧化钠溶液存
Silver mirror reaction usually use silver ammonia solution with the aldehyde group containing substances in alkaline conditions and the water bath at about 60 ° C when the reduction reaction to generate elemental silver; and Beijing volume test using sodium hydroxide solution to make silver mirror, indicating that Silver mirror reaction does not necessarily have to participate in the aldehyde. Therefore, the author designed the following experiment to study the type of reducing agent, reducing agent concentration, reaction time, reaction temperature on the reduction of the silver mirror. First, the experimental materials 1. Experimental selection of reducing agent. I designed the experiment mainly used aldehyde-containing compounds, in addition to try to sodium hydroxide solution