酸式酸根离子在溶液中能否共存的一般判定

A Determination of the Acidic Ions whother to Coexist on Not in Solution

一般酸式酸根离子在溶液中能否大量共存 ,主要看它们之间能否发生质子转移反应 .根据弱酸的电离常数和溶液的电中性原理等 ,可导出其酸式酸根离子的化学平衡式、电荷守恒式和物料守恒式 ,判断酸式酸根离子所引起的溶液酸碱性及其强弱 ,从而得出定量判据 .

Large amount of acid radical ion of acid salt can coexist or not in the solution depends on whether they have proton transfer reaction. From the ionization constant and electrical neutral principle of weak acid solution, we can draw out chemical balance equation of acid radical ion of acid salt, electric charge conservation equation and supplies conservation equation. We can also determine the acidity and alkalinity of the solution and their intensity caused by acid radical ion of acid salt, and thus draw out a quantitative criterun.