高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (8): 693.

• 研究论文 • 上一篇    下一篇

电位滴定法测定三组分混合酸——直线图解法

倪永年   

  1. 江西大学化学系
  • 收稿日期:1984-06-19 出版日期:1985-08-24 发布日期:1985-08-24

Determination of Ternary Mixtures of Acids by Potentiometric Titration——Linear Plot Method

Ni Yongnian   

  1. Department of Chemistry, Jianxi University, Nanchang
  • Received:1984-06-19 Online:1985-08-24 Published:1985-08-24

摘要: 用经典指示剂法或二次微商电位法测定多组分混合酸,因滴定曲线上各组分之间无明显可区分的突跃而有一定困难。近年来,不少分析工作者籍某些数学方法来解决此类复杂成份的分析,而图解法由于具有简单、直观和实用等优点也常被采用。两组分混合酸的图解法已见报导。本文提出了三组分混合酸分析的直线方法。

Abstract: Linear plot method for determination of component equivalence volumes of ternary mixtures of acids is presented. Linear titration cqualions arc derived. The experiments are carried out by potentiometric titration technique and performed by stcpwisc additions of equal volumes of titrants. Several examples of determinationof mixtures of acids by using this method are given and the results are satisfactory.

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