大学化学 >> 2015, Vol. 30 >> Issue (5): 45-51.doi: 10.3866/pku.DXHX20150545

化学实验 上一篇    下一篇

pH振荡研究型化学实验

杨珊1,2, 侯玉龙1, 胡道道1   

  1. 1. 陕西师范大学材料科学与工程学院 陕西西安 710062;
    2. 渭南师范学院化学与生命科学学院 陕西渭南 714099
  • 发布日期:2015-10-24
  • 通讯作者: 胡道道 E-mail:daodaohu@snnu.edu.cn
  • 基金资助:

    陕西省自然科学基础研究计划资助项目(No.2013JQ2021)

A Research-Oriented Chemical Experiment on pH Oscillation

Yang Shan1,2, Hou Yulong1, Hu Daodao1   

  1. 1. School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, Shaanxi, China;
    2. College of Chemistry and Life Science, Weinan Normal University, Weinan 714099, Shaanxi, China
  • Published:2015-10-24

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摘要：

BrO3--SO32--Fe(CN)64-(BSF)是典型的pH振荡反应。该振荡具有振幅大, 振幅和周期易于调节, 且可偶合pH敏感性材料实现pH刺激下的其他振荡行为转换的特点。与传统物理化学实验中的B-Z振荡相比, 该振荡具有更强的拓展性, 适合作为综合型或研究型实验, 对于培养学生创新能力与综合科研能力具有积极意义。

关键词: pH振荡, 溴酸盐-亚硫酸盐-亚铁氰化物(BSF)体系, 振荡行为, 活化能

Abstract:

BrO3--SO32--Fe(CN)64-(BSF) is a typical pH oscillating system with the large amplitude. The ampli- tude and period of this oscillation are adjustable. And this oscillation can be combined with pH sensitive materials in order to carry out to facilitate the transformation of other oscillation behaviors with the pH stimulation. Compare with the traditional B-Z oscillation in physical chemistry experiment, this pH oscillation based experiment can be expanded for comprehensive or research-oriented experiment, which is helpful for the comprehensive ability and the innovation ability training.

Key words: pH oscillation, Bromate-sulfite-ferrocyanide (BSF) system, Oscillating behavior, Activation energy