Home

Citation: Haiying Wei, Daqing Yang, Mingtao Run, Guoyan Huo. Examination and Analysis on Rationality of Experimental Design: Based on Reaction of Potassium Permanganate with Potassium Bormide[J]. University Chemistry, ;2024, 39(10): 283-288. doi: 10.12461/PKU.DXHX202404068 shu

Examination and Analysis on Rationality of Experimental Design: Based on Reaction of Potassium Permanganate with Potassium Bormide

National Demonstration Center for Experimental Chemistry Education (Hebei University), College of Chemistry and Materials Science, Hebei University, Baoding 071002, Hebei Province, China

Received Date: 10 April 2024
Revised Date: 4 July 2024

A well-designed experiment allows students to better understand chemical principles through observable phenomena. This study investigates the reaction between potassium permanganate and potassium bromide under two different conditions: identical setups as found in standard textbooks and varying pH ranges. The results indicate that potassium bromide reduces potassium permanganate in two distinct steps in the pH range 1.95–0.98, with the reduction products being influenced by the pH of the solution. The critical pH for the spontaneous occurrence of the second step is 1.21, which is close to the theoretical value of 1.36. Based on these findings, two recommendations are provided to further refine the experimental design by verifying the impact of acidity on reaction rates.
- Redox reaction,
- Potassium permanganate,
- Potassium bromide,
- Stepwise reduction,
- Acidity
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
1. [1]
  Tong Zhou , Jun Li , Zitian Wen , Yitian Chen , Hailing Li , Zhonghong Gao , Wenyun Wang , Fang Liu , Qing Feng , Zhen Li , Jinyi Yang , Min Liu , Wei Qi . Experiment Improvement of “Redox Reaction and Electrode Potential” Based on the New Medical Concept. University Chemistry, 2024, 39(8): 276-281. doi: 10.3866/PKU.DXHX202401005
2. [2]
  Yongpo Zhang , Xinfeng Li , Yafei Song , Mengyao Sun , Congcong Yin , Chunyan Gao , Jinzhong Zhao . Synthesis of Chlorine-Bridged Binuclear Cu(I) Complexes Based on Conjugation-Driven Cu(II) Oxidized Secondary Amines. University Chemistry, 2024, 39(5): 44-51. doi: 10.3866/PKU.DXHX202309092
3. [3]
  Hui Shi , Shuangyan Huan , Yuzhi Wang . Ideological and Political Design of Potassium Permanganate Oxidation-Reduction Titration Experiment. University Chemistry, 2024, 39(2): 175-180. doi: 10.3866/PKU.DXHX202308042
4. [4]
  Yifei Cheng , Jiahui Yang , Wei Shao , Wanqun Zhang , Wanqun Hu , Weiwei Li , Kaiping Yang . Learning Goes Beyond the Written Word: Practical Insights from the “Leaf Electroplating” Popular Science Experiment. University Chemistry, 2024, 39(9): 319-327. doi: 10.3866/PKU.DXHX202310033
5. [5]
  Hong Yan , Wenfeng Wang , Keyin Ye , Yaofeng Yuan . Organic Electrochemistry and Its Integration into Chemistry Teaching. University Chemistry, 2025, 40(5): 301-310. doi: 10.12461/PKU.DXHX202407027
6. [6]
  Ji-Quan Liu , Huilin Guo , Ying Yang , Xiaohui Guo . Calculation and Discussion of Electrode Potentials in Redox Reactions of Water. University Chemistry, 2024, 39(8): 351-358. doi: 10.3866/PKU.DXHX202401031
7. [7]
  Yan Kong , Wei Wei , Lekai Xu , Chen Chen . Electrochemical Synthesis of Organonitrogen Compounds from N-integrated CO₂ Reduction Reaction. Acta Physico-Chimica Sinica, 2024, 40(8): 2307049-0. doi: 10.3866/PKU.WHXB202307049
8. [8]
  Xudong Lv , Tao Shao , Junyan Liu , Meng Ye , Shengwei Liu . Paired Electrochemical CO₂ Reduction and HCHO Oxidation for the Cost-Effective Production of Value-Added Chemicals. Acta Physico-Chimica Sinica, 2024, 40(5): 2305028-0. doi: 10.3866/PKU.WHXB202305028
9. [9]
  Yunting Shang , Yue Dai , Jianxin Zhang , Nan Zhu , Yan Su . Something about RGO (Reduced Graphene Oxide). University Chemistry, 2024, 39(9): 273-278. doi: 10.3866/PKU.DXHX202306050
10. [10]
  Hui-Ying Chen , Hao-Lin Zhu , Pei-Qin Liao , Xiao-Ming Chen . Integration of Ru(Ⅱ)-Bipyridyl and Zinc(Ⅱ)-Porphyrin Moieties in a Metal-Organic Framework for Efficient Overall CO₂ Photoreduction. Acta Physico-Chimica Sinica, 2024, 40(4): 2306046-0. doi: 10.3866/PKU.WHXB202306046
11. [11]
  Zhuo WANG , Junshan ZHANG , Shaoyan YANG , Lingyan ZHOU , Yedi LI , Yuanpei LAN . Preparation and photocatalytic performance of CeO₂-reduced graphene oxide by thermal decomposition. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1708-1718. doi: 10.11862/CJIC.20240067
12. [12]
  Zhihuan XU , Qing KANG , Yuzhen LONG , Qian YUAN , Cidong LIU , Xin LI , Genghuai TANG , Yuqing LIAO . Effect of graphene oxide concentration on the electrochemical properties of reduced graphene oxide/ZnS. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1329-1336. doi: 10.11862/CJIC.20230447
13. [13]
  Qiang Zhang , Yuanbiao Huang , Rong Cao . Imidazolium-Based Materials for CO₂ Electroreduction. Acta Physico-Chimica Sinica, 2024, 40(4): 2306040-0. doi: 10.3866/PKU.WHXB202306040
14. [14]
  Zilin Hu , Yaoshen Niu , Xiaohui Rong , Yongsheng Hu . Suppression of Voltage Decay through Ni³⁺ Barrier in Anionic-Redox Active Cathode for Na-Ion Batteries. Acta Physico-Chimica Sinica, 2024, 40(6): 2306005-0. doi: 10.3866/PKU.WHXB202306005
15. [15]
  Zhaoyu Wen , Na Han , Yanguang Li . Recent Progress towards the Production of H₂O₂ by Electrochemical Two-Electron Oxygen Reduction Reaction. Acta Physico-Chimica Sinica, 2024, 40(2): 2304001-0. doi: 10.3866/PKU.WHXB202304001
16. [16]
  Xiaofeng Zhu , Bingbing Xiao , Jiaxin Su , Shuai Wang , Qingran Zhang , Jun Wang . Transition Metal Oxides/Chalcogenides for Electrochemical Oxygen Reduction into Hydrogen Peroxides. Acta Physico-Chimica Sinica, 2024, 40(12): 2407005-0. doi: 10.3866/PKU.WHXB202407005
17. [17]
  Tingting Jiang , Jing Chang . Application of Ideological and Political Education in Chemical Analysis Experiment under the Background of Emerging Engineering Education: Taking the Redox Titration Experiment as an Example. University Chemistry, 2024, 39(2): 168-174. doi: 10.3866/PKU.DXHX202308007
18. [18]
  Bing WEI , Jianfan ZHANG , Zhe CHEN . Research progress in fine tuning of bimetallic nanocatalysts for electrocatalytic carbon dioxide reduction. Chinese Journal of Inorganic Chemistry, 2025, 41(3): 425-439. doi: 10.11862/CJIC.20240201
19. [19]
  Lisha LEI , Wei YONG , Yiting CHENG , Yibo WANG , Wenchao HUANG , Junhuan ZHAO , Zhongjie ZHAI , Yangbin DING . Application of regenerated cellulose and reduced graphene oxide film in synergistic power generation from moisture electricity generation and Mg-air batteries. Chinese Journal of Inorganic Chemistry, 2025, 41(6): 1151-1161. doi: 10.11862/CJIC.20240202
20. [20]
  Jianan Hong , Chenyu Xu , Yan Liu , Changqi Li , Menglin Wang , Yanwei Zhang . Decoding the interfacial competition between hydrogen evolution and CO₂ reduction via edge-active-site modulation in photothermal catalysis. Acta Physico-Chimica Sinica, 2025, 41(9): 100099-0. doi: 10.1016/j.actphy.2025.100099

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(230)
HTML views(0)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return