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化学平衡常数是中学化学重要的基本理论,从近几年的高考试题来看,既有体现高考命题稳定性的基础试题,又有一些用电离平衡常数和沉淀溶解平衡常数及浓度商为载体的考查化学平衡常数难度较大的试题.有些考题还与平衡状态的判断、平衡移动的方向、化学反应速率的计算弱电解质的电离平衡及盐类的水解等相结合,使试题具有一定的综合性.本文对近几年高考有关化学平衡常数的考题作摘要的解析与反思,以便体会高考化学平衡常数的命题方向与解题方法.
Chemical equilibrium constant is an important basic chemistry theory of secondary school. In recent years, the college entrance examination test shows that there are some basic questions that reflect the stability of college entrance examination propositions, but also some of them are based on the ionization equilibrium constant and precipitation equilibrium constant and concentration Of the test chemical equilibrium constant more difficult questions.Accounting questions with the balance of judgment, the direction of the balance of movement, the chemical reaction rate calculation weak electrolyte ionization balance and salt hydrolysis and so on, so that the test has a certain amount of comprehensive In this paper, college entrance examination in recent years on the chemical equilibrium constant abstract analysis and reflection in order to understand the college entrance examination chemical equilibrium constant proposition direction and problem solving methods.