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物质的量浓度和溶质的质量分数都是关于溶液组成的重要物理量,是高中化学溶液有关计算的重要内容,也是高考的必考内容,物质的量浓度和溶质的质量分数的概念及表达式虽然比较简单,但考生不注意理解其内涵,不注意问题的特点,不注重解题的方法技巧,运算比较繁琐,既耗时又废力,应用起来常常容易出错,且准确率不高.为了解决这方面的问题,对该方面的有关应用及解题技巧总结如下.一、同一溶质,两溶液等质量混合,即m1=m2=m时:
The mass concentration of the material and the mass fraction of the solute are both important physical quantities related to the composition of the solution and are an important content in the calculation of the high school chemical solution and also the compulsory content of the college entrance examination. The concept of the mass concentration of the material and the mass fraction of the solute Relatively simple, but the examinee does not pay attention to understand its connotation, do not pay attention to the characteristics of the problem, do not pay attention to the method of solving the problem, the calculation is more cumbersome, time-consuming and wasteful, the application is often prone to error, and the accuracy is not high. In this regard, the aspects of the application and problem-solving skills are summarized as follows: First, the same solute, two solutions and other quality mixed, that m1 = m2 = m: