对数浓度图解酸碱溶液PH值,具有简单、直观等优点。在对数浓度图中,[H~+]线和[OH~-]线的位置不随水溶液酸碱体系的不同而改变,已在对数浓度图解中应用。位置不随体系不同而改变者尚有{[H~+]-[OH~-]}线和{[OH~-]-[H~+]}线,这两条线虽曾用于描述强酸、强碱溶液浓度与P~H值的关系,但未在对数浓度图解中获得应用。本文建议存对数 Logarithmic concentration diagram PH value of acid-base solution, with simple, intuitive and so on. In the logarithmic concentration diagram, the position of [H ~ +] line and [OH ~ -] line does not change with the acid-base system of aqueous solution, and has been used in the logarithmic concentration diagram. Although the location does not change with the system, there are still {{H ~ +] - [OH ~ -}} lines and {[OH ~ -] - [H ~ +]} lines. Although these two lines were used to describe the strong acids, Strong alkaline solution concentration and P ~ H value of the relationship, but not in the logarithmic concentration diagram obtained application. This article suggests depositing numbers