络合滴定中由副反应系数Igα_(L(H))计算pH的新方法

A New Method for Calculating pH from Side Reaction Coefficient Igα_(L(H)) in Complexometric Titration

本文根据溶液中酸碱组分的对数浓度与pH的关系,提出了由副反应系数计算溶液pH值的新方法。它使一个一元高次方程的求解简化为加减运算,为确定络合滴定的适宜酸度提供了一个简便的方法。

A new method for calculating pH from side reaction coefficient lgα_(L(H))in complexometric titration has been presented, The calculation can be carried out by using simple addition and subtraction of line segments in concentration logarithmic diagram instead of solving an equation of n-th degree. Therefore it is convenient way to seect the pH of solutions in complexometric titrations.