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混合碱液中碱量成分的分析,对于酸碱滴定理论的研究和实际分析工作都具有重要意义。本文依据在某一特定酸度条件下溶液中碱量成分的被滴定分数近似为定值,提出混合碱测定的新方法,并对NaOH-Na_2CO_3-Na_3AsO_4、NaOH-Na_3PO_4-Na_2CO_3和NaOH-Na_2CO_3-Na_2ZnO_2-三乙醇胺等复杂碱液的分析方法进行探讨。一、混合碱测定中存在的问题和解决办法对于象含有 Na_2CO_3和Na_3AsO_4两种弱碱的溶液滴定,其第一等当点
Analysis of alkali content in mixed lye is of great significance for the study of acid-base titration theory and practical analysis. In this paper, a new method for the determination of mixed alkali was proposed based on the determination of the titrated fraction of the alkali content in a solution under a specific acidity condition. A new method was developed for the determination of the content of NaOH-Na_2CO_3-Na_3AsO_4, NaOH-Na_3PO_4-Na_2CO_3 and NaOH-Na_2CO_3-Na_2ZnO_2 - triethanolamine and other complex lye analysis methods are discussed. First, the mixed alkali determination of the problems and solutions For such as containing Na2CO3 and Na3 AsO4 two weak base solution titration, the first equivalence point