《化工辞典》(化学工业出版社,王箴主编)写到乙烯是带有甜香味的无色气体。在实验室里制取乙烯,是把酒精和浓硫酸混和加热,使酒精分解而制得的。按现行高中化学课本(甲种本p63)的实验装置和操作方法制取的乙烯,气味很浓,混有酒味、难闻的怪味和呛鼻的刺激性气味,并没有甜香味。这是因为用这种制取的方法,在加热的过程中,随着温度的不断升高,产生了不同的物质所致。实验开始时,由于酒精受热而挥 “Chemical Dictionary” (Chemical Industry Press, edited by Wang Xi) wrote that ethylene is a colorless gas with a sweet scent. Ethylene production in the laboratory is made by mixing alcohol with concentrated sulfuric acid to heat and decompose the alcohol. According to the experimental equipment and operation method of the current high school chemistry textbook (A kind of p63), the odor is very strong, mixed with the smell of wine, unpleasant smell and pungent odor of the nose, and there is no sweet flavor. This is because with this method of preparation, different substances are produced as the temperature rises during the heating process. At the beginning of the experiment, the alcohol was warmed by heat