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对气体和稀溶液的通性的考查分别是全国高中学生化学竞赛初赛及决赛的基本要求,这两部分大量涉及到相对分子质量的测定及相关计算.本文将对气体和稀溶液中溶质的相对分子质量的测定及计算问题举例探究如下:一、气体1.利用理想气体状态方程例1设有一真空的箱子,在288 K,1.01×105Pa的压力下,称其质量为193.787 g.假若在同温同压下,充满某种气体
The examination of the connectivity of gases and dilute solutions are the basic requirements of the national high school chemistry contest preliminaries and finals respectively.These two parts involve a lot of determination and calculation of relative molecular mass.In this paper, Examples of molecular mass determination and calculation can be explored as follows: I. Gas 1. The ideal gas state equation is used Example 1 A vacuum box with a mass of 193.787 g at a pressure of 288 K, 1.01 × 10 5 Pa is provided Temperature and pressure, filled with a gas