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分析化学滴定分析方法理论整合研究之统一滴定曲线方程
Unifying Titration Curve Equation for Integration of Titrimetric Methods in Chemical Analysis
【摘要】 为了统一四大滴定曲线的方程从而进一步整合滴定理论,按照滴定反应涉及化学平衡的数目,把滴定反应分成2类,以1∶1滴定体系为例,将滴定分析的监测标度统一为p值(即pH、pM、pRe-或pX),推导了相应的滴定曲线方程通式,并将通式应用于8个具体滴定分析体系,应用结果显示:通式既能较好体现原有理论的本质,又能方便地拓展至更多滴定体系,充分说明了该整合思路的合理性和科学性。
【Abstract】 In order to unify the equations for the four titration curves and further integrate titration theory, according to the number of chemical equilibriums involved in the titration, the titrations are classified into two categories in this paper. By taking the 1∶1 titration system as an example, with the monitoring scale of the titration set as the unified p form(i.e. pH, pM, pRe- or pX), two corresponding general formula for titration curve equations are derived and applied to eight specific titration systems. The application results show that the general formula not only well reflect the essence of the existing theory, but also allow easy extrapolations to more titration systems, fully demonstrating the rationality and scientificity of the integration approach proposed.
【Key words】 titration theory; integration; titration curve equation; general formula; monitoring scale of titration;
- 【文献出处】 化学教育(中英文) ,Chinese Journal of Chemical Education , 编辑部邮箱 ,2023年24期
- 【分类号】O655.2
- 【下载频次】136