合成乙酸的实验,照一般资料所介绍的方法去做,只能用乙炔水合法制得乙醛,而且需时长,现象也不十分明显。我们把该实验作出如下的改进,不但能检验乙醛的存在,而且还能进一步检查乙酸的生成。改进后的实验需时短,效果好,现象明显,说服力较强。现把实验装置、注意事项和操作步骤分别介绍如下: The experiment of synthesizing acetic acid is performed according to the methods described in the general information. Acetaldehyde can only be produced by acetylene hydration. It takes a long time and the phenomenon is not very obvious. We have made the following improvements in this experiment to not only test the presence of acetaldehyde, but also to further examine the production of acetic acid. The improved experiment requires a short time, good results, obvious phenomena, and strong persuasion. The experimental device, precautions and operating procedures are described as follows: