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如何去除乙醛中的乙酸
更新时间: 2020-09-24 00:00:00  

方法是先在溶液中加入NaHCO3,将乙酸变为乙酸钠,再蒸馏。因为乙醛和乙酸的沸点相差太小,直接蒸馏不能分离。而盐类的沸点高很多可以分离,这是由于乙醛能发生银镜或铜镜反应,而乙酸不能。

关键词: 如何 去除 乙醛 乙酸

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