化学规律是在解决化学问题中总结出来的 ,这些规律作为一种工具 ,在解决新问题时能事半功倍。2 0 0 2年高考化学试题集中反映了这一点。一、弱电解质的电离规律规律 :对于一元弱酸 (或一元弱碱 )的溶液 ,溶液中各种关系如表 1所示。表 1　一元弱酸 (或一元弱碱 )溶液的各种关系 The laws of chemistry are summarized in solving chemical problems. These laws serve as a tool to do more with less when solving new problems. The chemistry examination questions of the college entrance examination in 2002 reflect this point. First, the law of weak electrolyte ionization law: For a weak acid (or a weak base) solution, the various relationships in the solution shown in Table 1. Table 1 Various Relationships of Monobasic Weak Acid (or Monobasic Weak Base) Solutions