【摘要】 沉淀滴定体系的平衡关系较复杂,特别是有络合剂存在的条件下,要进行定量处理,常涉及解高次方程,十分不便。 本文运用溶度积原理,建立沉淀平衡的一般函数式,进行合理简化,绘制出Mohr法和Volhard法的浓度对数图,并结合实例论证了该图在分析实践中应用的合理性与可行性。更多还原

【Abstract】 The relation of equilibrium involved in the precipitation titration is very complex,especially in the presence of complexing agent.The,quantitative treatment is often complicate and inconvenient owing to the solution of equations of higher degree. : ? . ?This paper aims to avoid tedious work of calculation,and instead,applying the solubility product prinoiple to set up a general expression for drawing-up of concentration- logarithmic diagram,which is simple and reasonable.Both Mohr’s and Volhard’s methods o?precipitation titration are considered. The treatise has proved that the suitable eonditions for this diagram is convenient to apply in practice with satisfied accuracy,更多还原