题目

The practice of magic includes special words, actions, and objects. Most magic involves a person called a magician, who claims to have supernatural powers. Magic words. To work most magic, the magician sings or speaks special words in a certain order. These words are called incantations or spells. Some spells form prayers into monsters, spirits, or other supernatural forces. Many societies believe the magic will not work unless the magician recites the spells perfectly. Other magic words have no meaning, though they supposedly possess power when spoken by a magician. Magic actions Magi14．NH4Cl溶于重水（D2O）后产生一水合氨和水合氢离子，试回答以下问题：（1）溶液中滴入几滴紫色石蕊试液，观察到的现象是溶液变红色；（2）写出一水合氨和水合氢离子的化学式：NH3•HDO、D3O+；（3）此NH4Cl溶液中存在的微粒有NH4+、Cl-、D2O、NH3•HDO、D3O+，OD-．