硫酸亚铁铵晶体[
![](https://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmsub%3E%3Cmrow%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmtext%3EN%3C%2Fmtext%3E%3Cmsub%3E%3Cmrow%3E%3Cmtext%3EH%3C%2Fmtext%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmtext%3E4%3C%2Fmtext%3E%3C%2Fmrow%3E%3C%2Fmsub%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmtext%3E2%3C%2Fmtext%3E%3C%2Fmrow%3E%3C%2Fmsub%3E%3Cmtext%3EF%3C%2Fmtext%3E%3Cmtext%3Ee%3C%2Fmtext%3E%3Cmsub%3E%3Cmrow%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmtext%3ES%3C%2Fmtext%3E%3Cmsub%3E%3Cmrow%3E%3Cmtext%3EO%3C%2Fmtext%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmtext%3E4%3C%2Fmtext%3E%3C%2Fmrow%3E%3C%2Fmsub%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmtext%3E3%3C%2Fmtext%3E%3C%2Fmrow%3E%3C%2Fmsub%3E%3Cmo%3E%E2%8B%85%3C%2Fmo%3E%3Cmtext%3E6%3C%2Fmtext%3E%3Cmsub%3E%3Cmrow%3E%3Cmtext%3EH%3C%2Fmtext%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmtext%3E2%3C%2Fmtext%3E%3C%2Fmrow%3E%3C%2Fmsub%3E%3Cmtext%3EO%3C%2Fmtext%3E%3C%2Fmath%3E)
]又称摩尔盐,简称FAS,是一种重要的化工原料,可用作净水剂、治疗缺铁性贫血的药物等,常温下为浅绿色晶体,可溶于水,100℃时易失去结晶水。实验室利用废铁屑(主要成分为Fe,还有少量FeS和油污)合成硫酸亚铁铵晶体的步骤如下:
Ⅰ.碱煮水洗:将6.0g废铁屑置于锥形瓶中,加入20mL30%的
溶液,加热煮沸一段时间,倾去
溶液,水洗至中性;
Ⅱ.
的制备:向处理过的铁屑中加入稀
反应,结束后趁热过滤;
Ⅲ.硫酸亚铁铵晶体的制备:向滤液中迅速加入一定体积的饱和
溶液,经蒸发皿加热至出现晶膜时停止加热,冷却结晶硫酸亚铁铵晶体,再过滤、洗涤、干燥得到产品。
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