大学化学 >> 2016, Vol. 31 >> Issue (2): 29-33.doi: 10.3866/PKU.DXHX20160229

师生笔谈 上一篇    下一篇

一元强碱滴定二元弱酸的林邦滴定曲线方程及pHsp计算

乔成立*()   

  • 发布日期:2016-03-15
  • 通讯作者: 乔成立 E-mail:qiaocl123@163.com

The Ringbom Equation for the Titration Curve of Diprotic Weak Acid by Monoprotic Base and pHsp Calculation

Cheng-Li QIAO*()   

  • Published:2016-03-15
  • Contact: Cheng-Li QIAO E-mail:qiaocl123@163.com

摘要:

用质子条件式PBE、物料平衡式MBE、副反应系数和条件稳定常数等知识,推导出一元强碱滴定二元弱酸溶液的林邦滴定曲线方程,并用其推导出第一、第二化学计量点pHsp1和pHsp2的计算公式。

关键词: 酸碱滴定, 副反应系数, 条件稳定常数, 滴定曲线方程

Abstract:

The Ringbom equation for the titration curve of diprotic weak acid by monoprotic base was developed based on the proton balance equation, the mass balance equation, the side reaction coefficient, and the conditional stability constant.The calculation formulas for the first(pHsp1) and the second(pHsp2) stoichiometric point were deduced subsequently.

Key words: Acid-base titration, Side reaction coefficient, Conditional stability constant, Titration curve equation

MSC2000: 

  • O651