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勒沙特列原理又称平衡移动原理,该原理适用于一切平衡体系,如化学平衡、溶解平衡、电离平衡、水解平衡等,为高考中常见题型。现举例如下:一、化学平衡例1(93年上海高考题)(1)CuCl_2溶液有时呈黄色,有时呈黄绿色或蓝色,这是因为在 CuCl_2的水溶液中存在如下平衡:
The Le Chatelier principle, also known as the principle of balanced movement, applies to all equilibrium systems, such as chemical equilibrium, dissolution equilibrium, ionization balance, and hydrolysis equilibrium, and is a common question type in college entrance examinations. Examples are as follows: 1. Chemical Equilibrium Example 1 (93-year Shanghai college entrance examination question) (1) CuCl 2 solution is sometimes yellow, sometimes yellowish green or blue, because of the following equilibrium in the aqueous solution of CuCl 2 :