一元强碱滴定二元弱酸的林邦滴定曲线方程及pHsp计算

doi:10.3866/PKU.DXHX20160229

University Chemistry ›› 2016, Vol. 31 ›› Issue (2): 29-33.doi: 10.3866/PKU.DXHX20160229

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

Cheng-Li QIAO*()

School of Applied Technology, Qiqihar University, Qiqihar 161006, Heilongjiang Province, P. R. China

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

Abstract

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(pH_sp₁) and the second(pH_sp₂) stoichiometric point were deduced subsequently.

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

MSC2000:

O651

Cheng-Li QIAO. The Ringbom Equation for the Titration Curve of Diprotic Weak Acid by Monoprotic Base and pH_sp Calculation[J].University Chemistry, 2016, 31(2): 29-33.

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

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