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2013年甘肃省开始实行新课标全国普通高校统一招生考试。2013年教育部考试中心编写的《普通高等学校招生全国统一考试大纲(新课标版)》在高考化学学科的考试范围与要求中增加了“掌握氧化还原反应的配平与相关计算”的要求,这就意味着今后甘肃省参加高考的理科考生,在配平氧化还原反应方程式方面的能力应提高到一个新的高度。氧化还原反应方程式的基本配平方法是化合价升降法,其基本原理是电子得失相等。在此基础上,对于一些较为复杂的氧化还原
In 2013, Gansu Province started to implement the new curriculum standard unified national college entrance examination. In 2013, the General Examination for Entrance Examination of Colleges and Universities (New Course Version) prepared by the Examination Center of the Ministry of Education added “Grading and Correlation Calculation of Redox Reactions” to the examination scope and requirements of chemistry subjects in the entrance examination. Requirements, which means that in the future Gansu Province to take the college entrance examination of science candidates, the ability to balance the redox reaction equation should be raised to a new level. The basic principle of the redox reaction equation is the valence lift method, whose basic principle is that the electrons have the same gain and loss. On this basis, for some of the more complex redox