National Changhua University of Education Institutional Repository : Item 987654321/10430
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 6491/11663
造访人次 : 24884224      在线人数 : 57
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/10430

题名: Complexometric Titration of Aluminum and Magnesium Ions in Commercial Antacids: An Experiment for General and Analytical Chemistry Laboratories
作者: Yang, Shui-Ping;Tsai, Ruei-Ying
贡献者: 化學系
日期: 2006-06
上传时间: 2012-05-23T02:28:25Z
出版者: American Chemical Society
摘要: Few chemical experiments use the reagents from consumer products. Student interest in chemistry usually suffers from the lack of relevance to their daily lives. Ultimately this leads to insufficient student chemical problem-solving ability. A novel experiment for determining metallic ions in commercial antacids is described. This experiment is developed with three independent protocols based on complexometric direct and back titrations containing the concepts and usages of blocking, masking, buffer controls and metallic indicators. The three protocols involve determining the total aluminum and magnesium ion contents and individual ion content. This approach is different from determining the acid-neutralizing power of anions in antacids using acid–base titration. Using statistical analyses, student and instructor data indicated good results. Student comments were positive. Thus, this experiment is feasible for general chemistry and introductory analytical chemistry laboratories.
關聯: Journal of Chemical Education, 83(6): 906-909
显示于类别:[化學系] 期刊論文

文件中的档案:

档案 大小格式浏览次数
index.html0KbHTML483检视/开启


在NCUEIR中所有的数据项都受到原著作权保护.

 


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈