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判断可逆反应达到平衡状态的标志,是近几年高考的热点考题,学生学习起来困难,难以理解,失分严重,希望这个专题能帮助同学们对这块知识的理解和加深,高考能考出好成绩。一、“根本”标志:能直接体现平衡定义的描述,有以下两类:(1)速率标志:v正=v逆,有两层含义:1指反应体系中的用同一物质来表示的正反应速率和逆反应速率相等(即对于同一物质而言,该物质的消耗速率等于它的生成速率)。2对于不同的物质
To determine the reversible reaction to achieve a balance of signs, is a hot test of college entrance examination in recent years, students learn difficult, difficult to understand, serious loss points, I hope this topic can help students understand this knowledge and deepen the entrance examination Good results. First, the “fundamental ” sign: can directly reflect the description of the definition of equilibrium, the following two categories: (1) rate sign: v is v = v inverse, there are two meanings: 1 refers to the reaction system with the same substance Of the positive reaction rate and reverse reaction rate equal (ie for the same material, the consumption rate of the material is equal to its rate of generation). 2 for different substances