大学化学 >> 2016, Vol. 31 >> Issue (3): 78-81.doi: 10.3866/PKU.DXHX20160378

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用MATLAB简化溶液氢离子浓度计算的教学内容

黄千姿1,唐美华2,张之翼1,边敏1,卜洪忠1,孙尔康3,陈国松1,*()   

  1. 1 南京工业大学化学与分子工程学院, 南京 210009
    2 南京工业大学生物与制药工程学院, 南京 210009
    3 南京大学化学化工学院, 南京 210093
  • 发布日期:2016-04-06
  • 通讯作者: 陈国松 E-mail:gschen3303@sina.com
  • 基金资助:
    国家重点基础研究发展计划(2013CB733501);江苏省教改"重中之重"项目(2013JSJG006)

Simplification of the Hydrogen Ion Concentration Calculation Using MATLAB

Qian-Zi HUANG1,Mei-Hua TANG2,Zhi-Yi ZHANG1,Min BIAN1,Hong-Zhong BU1,Er-Kang SUN3,Guo-Song CHEN1,*()   

  1. 1 College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 210009, P. R. China;
    2 College of Biotech and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China;
    3 College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
  • Published:2016-04-06
  • Contact: Guo-Song CHEN E-mail:gschen3303@sina.com
  • Supported by:
    国家重点基础研究发展计划(2013CB733501);江苏省教改"重中之重"项目(2013JSJG006)

摘要:

溶液氢离子浓度计算涉及大量公式及繁杂的使用条件,是公认的教学重点和学习难点。将分布分数代入质子条件式即得关于氢离子浓度的一元高次方程,可用MATLAB方便地求解。因此,只要会写质子条件式就能迅速得到氢离子浓度,从而摆脱大量公式的烦扰,便于学生将精力更有效地集中于分析化学主体知识的学习。

关键词: MATLAB, 氢离子浓度计算, 质子条件式, 分布分数

Abstract:

The calculation of hydrogen ion concentration is tightly associated with the conditions applied, and has been the keynote and difficulty part in study. A high degree univariate polynomial equation of hydrogen concentration was obtained by substituting the distribution fraction into the proton balance equation, and could be solved conveniently using MATLAB. Therefore, the calculation of the hydrogen concentration becomes easy as long as one can write the proton balance equation correctly. In such a way, students can better focus on learning the main knowledge of analytical chemistry.

Key words: MATLAB, Calculation of hydrogen ion concentration, Proton balance equation, Distribution fraction

MSC2000: 

  • O65