化学方程式2SO2(g)+O2(g)催化剂△2SO3(g)因其典型的可逆性和其在化工生产中的重要作用,近年来高频率地在全国各省市(区)化学高考试卷中出现。总结近年对该反应的考查,主要考查的知识点有:1.化学反应速率、化学平衡常数的计算;外界条件对平衡移动的影响;化学平衡标志的判断;2.与热化学方程式有关的计算; Chemical formula 2SO2 (g) + O2 (g) Catalyst △ 2SO3 (g) Because of its typical reversibility and its important role in the chemical production, in recent years, high frequency in all provinces (regions) . Summarized in recent years, the reaction of the test, the main test of the knowledge points are: 1. Chemical reaction rate, the chemical equilibrium constant calculation; the influence of external conditions on the balance of movement; chemical equilibrium signs of judgment; 2. Thermochemical equation-related calculations ;