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化学平衡计算题的类型主要有 :求转化率、求混合气体中各组分的质量分数、求平衡时混合气体的压强、求化学方程式的计量数、求平衡时混合气体的平均分子量等。笔者就最后一类题的解题方法和计算实例作以下归纳。一、混合气体平均分子量的数学表达式1.Ｍ =Ｍ1×Ｖ1% +Ｍ2 ×Ｖ2
The types of chemical equilibrium calculation questions are mainly: the conversion rate, the mass fraction of each component in the mixed gas, the pressure of the mixed gas in the equilibrium, the calculation of the chemical equation, and the average molecular weight of the mixed gas in the equilibrium. The author summarizes the problem solving methods and calculation examples for the last category of questions. First, the mathematical expression of the average molecular weight of mixed gas 1.M = M1 × V1% + M2 × V2