新制氢氧化钙溶度积测定方法研究

A Study of Determination Method of Solubility Product in Freshly Prepared Calcium Hydroxide

通过正交试验分析得到配位滴定法测定Ca2 + 浓度的较优条件 ,Ca2 + 浓度的相对标准偏差 0 0 6 % ,用中和滴定法测定OH-浓度 ,相对标准偏差 0 1 4% ,计算出新制Ca(OH) 2 溶度积 4 0 7× 1 0 -5 。

Under the optimum conditions obtaind by orthogonal test,calcium ion concentration is determined by dentate titration.The relative standard derivation for Ca 2+ is 0.06%.Hydroxide ion concentration is determined by neutralizing titration method.The RPD for OH -is 0.14%.The solubility product of calcium hydroxide is 4.07×10 -5 and the result is satisfactory.