不少初学者用“观察法”配平不甚得法,缺乏明确的观察思路。为了使大家能有效地应用此法配平化学方程式,下面介绍几种观察时的具体思路,供参考。 思路一首先在要配平的化学方程式中找出一个最复杂的分子,把它的系数暂定为1,然后以此作为观察配平的起点,根据该分子中各元素的原子个数,调整其他分子的系数,使反应前后各元素的原子数相等。如果系数出 Many beginners use the “observation method” to balance the law, lacking a clear idea of ​​observation. In order to enable everyone to effectively use this method to balance the chemical equation, the following introduces several specific ideas for observation, for reference. The first step is to find the most complex molecule in the chemical equation to be balanced, tentatively set its coefficient to 1, and then use this as the starting point for observing the balance, and adjust other molecules based on the number of atoms of each element in the molecule. The coefficient of the element equals the number of atoms of each element before and after the reaction. If the coefficient is out