现行高二课本测定乙醇分子结构的实验，产生氢气的体积往往都比理论值少，难以说明乙醇分子中只有一个可被置换的氢原子，为此，笔者对该实验装置作了改进，可得到更好的实验结果，现介绍于下 In the current high school textbook experiment for determining the molecular structure of ethanol, the volume of hydrogen produced is often less than the theoretical value. It is difficult to explain that there is only one hydrogen atom that can be replaced in the ethanol molecule. For this reason, the author has improved the experimental apparatus and obtained more. Good experimental results are presented below