在混合物问题中,有关的化学量不是定值而是与各组分的百分含量有关的平均值,例如平均原子量、平均分子量、平均浓度、平均密度等。因此,可利用平均值的性质进行分析,巧妙地推断和解答一些有关混合物的问题。一、巧推混合物的浓度例1 质量百分比浓度分别为9x%和x%的两硫酸溶液,等体积混和后,所得到的硫酸溶液的浓度是()。 In the problem of mixture, the relevant chemical quantity is not a fixed value but an average value related to the percentage of each component, such as average atomic weight, average molecular weight, average concentration, average density, and the like. Therefore, the nature of the average can be used for analysis, and some questions about the mixture can be inferred and answered cleverly. First, the concentration of the clever push mixture. Example 1 The two sulfuric acid solutions with mass percentage concentrations of 9x% and x%, respectively, are mixed in equal volume and the concentration of the resulting sulfuric acid solution is ().