“化学平衡”知识,理论性强,题型多变,运用灵活,其中的一些疑难问题,许多同学学习时会感到很困难,难以及时理解和掌握.为此,本文就化学平衡的若干疑难问题进行一些整理和分析,供大家参考.一、平均相对分子质量或压强不变,可逆反应是否平衡 Many of our students will find it difficult and difficult to understand and master in time because of their strong theoretical knowledge, changing subject types, flexible use and some of the difficult problems involved. Therefore, Some difficult problems to sort out and analyze for your reference. First, the average relative molecular mass or pressure remains unchanged, the reversible reaction is balanced