摘要
提出了Ｎａ_２ＣＯ_３滴定分析中第一终点滞后的原因是碳酸氢钠的水解，加热煮沸被滴定溶液而使第二滴定突跃加大也是碳酸氢钠水解的结果，应用＂型体分布图＂，对碳酸钠整个滴定过程进行了分析，研究了碳酸钠滴定过程的化学反应，提出了与目前分析化学教科书有关章节不同的观点，以及提高分析碳酸钠准确度的具体方法。
t points out that the a reason that the first end point falls behind in Na_2CO_3's titrametric analysis is decomposing NaHCO_3. That boiling solution by heating causes the second titametric aleap to expand is another result of NaHCO_3's hydrolysis. And it analyses all the course of the Na_2CO_3's titrametric analysis by shape distribution figures. It discusses the chemical reaction through all Na_2CO_3's titrametric analysis in details. It puts forward a different point from that in today's analysis chemical textbook ,as well as accurate particular method to improve analysis of Na_2CO_3.
出处
《鞍山钢铁学院学报》
1996年第6期7-11,共5页
Journal of Anshan Institute of Iron and Steel Technology
关键词
碳酸钠
碳酸氢钠
滴定
水解
sodium carbonate, sodium bicarbonate, shape distribution figure, titrametric analysis
