一、在以往的教学中,学生要么忽视盐的水解,要么不分什么类型的盐一律视为水解。此次教学,从实验入手,抓住现象,揭示水解的实质,找出水解的规律,收到显效。学生认为,酸之所以呈酸性,是因为酸能电离出H~+,碱之所以呈碱性,是因为碱能电离出 OH~-,正盐的分子组成中既无 H~-也无OH~-,所以,正盐在溶液中 First, in previous teachings, students either ignored the hydrolysis of salt or did not distinguish any type of salt from hydrolysis. This teaching, starting from the experiment, seizes the phenomenon, reveals the essence of hydrolysis, finds the law of hydrolysis, and receives significant results. The students believe that the reason why the acid is acidic is because the acid can ionize H~+. The reason why the alkali is alkaline is because alkali can ionize OH~-. There is neither H~ nor OH in the molecular composition of normal salt. ~-, so the salt is in solution