氨水既是一种重要的化工原料,也是中学化学 实验中的常用试剂。但中学化学课本对氨水的知 识未作系统介绍,为了便于同学们学习和运用,特 作如下归纳: 1.多种成分 氨水是氨的水溶液,氨溶于水时,大部分NH3 与H2O通过氢键结合形成一水合氨(NH3·H2O), 故氨极易溶于水形成氨水。在通常状况下,1体积 水能溶解约700体积氨。 NH3·H2O是一种弱碱,能发生微弱电离生成 Ammonia is not only an important chemical raw material but also a commonly used reagent in middle school chemical experiments. However, in the middle school chemistry textbooks, the knowledge of ammonia is not systematically introduced. In order to facilitate students’ learning and use, the following are summarised as follows: 1. Various components Ammonia is an aqueous solution of ammonia. When ammonia is dissolved in water, most of NH3 and H2O pass hydrogen. The bond forms a monohydrate of ammonia (NH3 · H2O), so ammonia is very soluble in water to form ammonia. Under normal conditions, 1 volume of water can dissolve about 700 volumes of ammonia. NH3·H2O is a weak base that can generate weak ionization