一、问题的提出戚万友老师曾发表《巧制固体氢氧化亚铁》~([1])一文,该文中描述不但能在溶液中清楚地看到白色的沉淀,而且还能制得白色的氢氧化亚铁固体粉末。我对此实验非常感兴趣,于是按照该文中所述实验步骤重复实验。意外发现向硫酸亚铁溶液中加无水乙醇时有大量白色沉淀产生,此时并没有加氢氧化钠溶液,为何会出现白色沉淀呢?难道这就是《巧制固体氢氧化亚铁》一文描述的白色固体粉末吗?鉴于此,我进 First, the question raised Qi Wanyou teacher once published “clever system of solid ferrous hydroxide” ~ ([1]) article, which describes the white liquid can not only clearly see the precipitation, but also can produce white hydrogen Ferrous oxide solid powder. I was very interested in this experiment, so I repeated the experiment according to the experimental procedure described in this article. Accidentally found to ferrous sulfate solution plus ethanol when there is a large number of white precipitate produced, this time did not add sodium hydroxide solution, why white precipitate it? Is this “skillful solid ferrous hydroxide,” a article describes White solid powder? In view of this, I entered