氧化还原反应的配平和计算对于大部分同学来说都是一个难点。虽然,现在高考中配平和计算的难度有所降低,但大部分同学仍然掌握不了配平的方法和技巧。现就配平及计算中的方法及技巧和大家做一个交流。一、氧化还原反应的配平1.化合价升降法。依据:得失电子数目守恒。步骤:(1)找化合价发生变化的元素; Redox balance and calculation for most students is a difficult task. Although the difficulty of grading and calculation in the college entrance examination now declines, most of the students still can not grasp the methods and skills of grading. Now on the balance and calculation methods and techniques and we make a exchange. First, the redox reaction trim 1. valence lift method. Basis: gain and loss of the number of electrons conservation. Steps: (1) to find the element of change in valence;