University Chemistry ›› 2016, Vol. 31 ›› Issue (9): 98-102.doi: 10.3866/PKU.DXHX201510017

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Accurate Titration of Polyprotic Acids

Cheng-Li QIAO1,*(),Wen-Xin LI2   

  1. 1 School of Applied Technology, Qiqihar University, Qiqihar 161006, Heilongjiang Province, P. R. China
    2 The 29th Middle School of Qiqihar City, Qiqihar 161002, Heilongjiang Province, P. R. China
  • Published:2016-09-30
  • Contact: Cheng-Li QIAO E-mail:qiaocl123@163.com

Abstract:

Using the Ringbom equation for titration of dibasic acids, the first and second titration jumps were derived. As followed, the accurate conditions for sequential titration of dibasic weak acids were derived with the first and second titration jumps. And the deduction is also applied to titration of polyprotic acids.

Key words: Polyprotic acid titration, Titration jump, Titration curve equation

MSC2000: 

  • O6