摘要
测定了甘露醇强化硼酸生成络合酸的酸度常数,提出用最低pH值法和最大耗碱量法确定络合酸的初始浓度,在此基础上分别用pH值法和滴定法测定了络合酸的酸度常数Ka,测定结果分别为Ka=3.6×10-5和Ka=1.1×10-5,并对所得结果之间的差异进行了分析.
The acid dissociation constant of complexometric acid generated from the reaction of boric acid and mannitol is measured in this paper. It is proposed to use the minimum pH value method and the method of most quantity of consuming alkali to measure the initial thickness of complexometric acid. Further, the pH value method and titration method are adopted to measure the acidity constant Ka of complexometric acid, with Ka = 3.6×10^-5 and Ka = 1. 1 ×10^-5 respectively. Finally, the result differences are discussed.
出处
《重庆工学院学报（自然科学版）》
2009年第6期172-176,共5页
Journal of Chongqing Institute of Technology
基金
重庆市自然科学基金资助项目(2007BB1393)
重庆市教委科学技术研究项目(KJ060610)
关键词
硼酸
甘露醇
络合酸
酸度常数
boric acid
mannitol
complexometric acid
acid dissociation constant
