大学化学 >> 2018, Vol. 33 >> Issue (12): 76-82.doi: 10.3866/PKU.DXHX201804014

师生笔谈 上一篇    下一篇

结合图像讨论酸碱滴定曲线与酸碱平衡曲线的关系

温琰*()   

  • 收稿日期:2018-04-12 发布日期:2018-12-14
  • 通讯作者: 温琰 E-mail:wenyanzh@163.com

Relationship between Acid-Base Titration Curve and Acid-Base Equilibrium Curve

Yan WEN*()   

  • Received:2018-04-12 Published:2018-12-14
  • Contact: Yan WEN E-mail:wenyanzh@163.com

摘要:

弱酸的一对共轭型体的两条分布曲线移到pH-δAδHA坐标系上,二曲线便互相重合,成为一条共轭分布曲线,也是酸碱平衡曲线。结合该图像讨论了滴定过程,得知几条平衡曲线作为原始线合成滴定曲线,以及滴定曲线形状特征的由来。

关键词: 滴定曲线方程, 共轭曲线, 滴定分数

Abstract:

The two distribution fraction curves of a weak acid and its conjugated base are integrated to the pH-δA, δHA coordinate system. The two curves coincide with each other to form a conjugate distribution fraction curve, which is also an acid-base equilibrium curve. The titration process is discussed with images to understand how a specific equilibrium curve to a titration.

Key words: Titration curve equation, Conjugate curve, Titration fraction

MSC2000: 

  • G64