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一定条件下,起始加入情况不同的同一可逆反应达平衡后,任何相同组分的百分含量(体积、物质的量)均相同,这样的化学平衡互称等效平衡.解“等效平衡”习题的关键是要抓牢什么条件下的等效平衡,以及该条件下如何判定“等效平衡”.但目前由于研究性学习开展的需要,不少老师对一些常规习题进行改进,设计出了一些开放性、探索型的习题.下面是笔者设计的一道不定条件的探索型“等效平衡”习题:
Under certain conditions, after the same reversible reaction with different initial addition conditions has reached equilibrium, the percentage content (volume, substance amount) of any identical component is the same, and such chemical balances are mutually equivalent equilibrium solutions. The key to balance “” exercises is to grasp the conditions under which the equivalent balance, and how to determine the “equivalent balance” under this condition. However, due to the needs of research-based learning, many teachers conduct routine exercises. Improvements have been made to design open-ended, exploratory exercises. The following is an exploration-based “equilibrium” exercise with uncertainties designed by the author: