对中学实验乙醇催化氧化产物中醛和水的检验改进

Improvement of the Testing Method of Acetaldehyde and Water Produced by Ethanol Catalytic Oxidation

对上海科学技术出版社出版的《化学·高中二年级第二学期(试用本)》的乙醇催化氧化生成物乙醛和水的检验方法进行了改进,用气相色谱法和席夫试剂检验乙醛的产生,同时使用相对湿度计检验水并且绘制相对湿度变化图,改进后的实验装置较书本上原有的实验更为安全快捷,具有良好的应用前景。

The experiment introduced in this essay aims to improve the testing method of acetaldehyde and water produced by ethanol catalytic oxidation from the senior high school Chemistry textbook(Shanghai Scientific and Technological Education Publishing House).Gas chromatography and Schiff reagent are used to examine the production of acetaldehyde.A relative humidity meter is employed to check water and draw the variation diagram of relative humidity.This improved experimental device is safer and faster than the original device in the textbook,and has a good application prospect.