盐是酸和碱反应的产物,但大多数盐溶液呈酸性或碱性而非中性,其根本原因是构成盐的阴阳离子有弱离子,发生水解,导致溶液中的H+和OH-浓度不等,溶液不呈中性。盐溶液的水解除了与自身的性质有关外,还与温度等外界因素有关。盐类的水解在工农业生产、科学实验和日常生活中都有广泛的应用,如肥效保持、阴阳离子能否共存和粒子浓度大小的判断、存储试剂、除杂、配置溶液以及净水、灭火等。 Salts are the product of acid and base reactions, but most salt solutions are acidic or basic rather than neutral. The underlying cause is that the anion and anion that make up the salt have weak ions that hydrolyze, resulting in H + and OH- concentrations in the solution that are not Etc., the solution is not neutral. Salt solution is not only related to the nature of its own hydrolysis, but also with the temperature and other external factors. Salt hydrolysis in the industrial and agricultural production, scientific experiments and daily life has a wide range of applications, such as fertilizer efficiency, anion and cation can coexist and determine the size of particle concentration, storage reagents, cleaning, solution and water purification, fire extinguishing Wait.