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纵观近几年高考题,相继对电离平衡常数、水解平衡常数、溶度积常数三个概念进行考查,而对不少考生而言,三大平衡常数是他们的知识和思维盲区,即使试题简单,也无法解答而失分。其实,三大平衡常数可以看成是对化学平衡常数的拓展延伸,与一般的化学平衡常数本质是相同的,只是研究对象不同,解题时仍需从化学平衡常数视角去分析问题,注意概念内涵的理解,侧重三大平衡常数的基本运用,不宜随意拓展。
Throughout the college entrance examination in recent years, the ionization equilibrium constant, hydrolysis equilibrium constant, solubility constant three concepts to examine, and for many candidates, the three equilibrium constant is their knowledge and thinking blind spots, even if Simple questions, but also unable to answer the points lost. In fact, the three equilibrium constants can be seen as an extension of the extension of the chemical equilibrium constant, and the nature of the chemical equilibrium constant is the same, but different research objects, the problem still need to analyze the problem from the chemical equilibrium constant perspective, pay attention to the concept Connotation of understanding, focusing on the three basic use of equilibrium constant, not free to expand.