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水溶液中pH值的计算是分析化学的基础理论之一,以往在许多教科书中,对酸、碱、盐多元混合体系pH值的计算,大多采用经过近似简化了的计算或图解方法。这就要求读者必须掌握和熟记数条规则,从一开始就进行有效的忽略,因而往往会使读者误认为对复杂混合体系的pH值计算,似乎必须对模型方程进行忽略简化才能解决问题。本文针对这一问题,提出一个考虑任意酸、碱、盐及其混合物的通用模型方程,着重说明,对化学工作者
The calculation of pH value in aqueous solution is one of the basic theories of analytical chemistry. In many textbooks, the calculation of pH values of acid, alkali and salt mixed systems has been mostly calculated by approximate simplification or graphic method. This requires that the reader must master and memorize several rules and effectively ignore it from the beginning, which often leads the reader to mistakenly believe that it is necessary to neglect the model equation to solve the problem by calculating the pH value of a complex mixed system. In this paper, a general model equation considering any acid, base, salt and its mixture is put forward in this paper, highlighting that for chemical workers