氢气的实验室制法是“水、氢”这一章节的重点内容之一,同学们应该很好掌握.下面介绍的是氢气实验室制取中的几个问题.供同学们学习时参考.1.实验室为什么常用锌和稀硫酸反应来制取氢气?答:实验室里制取氢气时也可用镁或铁,但镁与酸反应速度太快,不易控制,且价格较贵;铁与酸反应速度较慢,而且铁片中往往含有硫、 The laboratory method of hydrogen gas is one of the key contents of the chapter “Water, Hydrogen”. Students should be well mastered. The following is a description of several issues in the preparation of the hydrogen laboratory. Reference for students when learning .1. Why does the laboratory use zinc and dilute sulfuric acid to produce hydrogen? A: Magnesium or iron can also be used in the preparation of hydrogen in the laboratory. However, the reaction rate of magnesium and acid is too fast to control, and the price is more expensive; The reaction with acid is slower, and the iron flakes often contain sulfur,