婴儿湿巾缓冲能力的测试——一个贴近生活的实验

doi:10.3866/PKU.DXHX201905022

University Chemistry ›› 2020, Vol. 35 ›› Issue (1): 76-79.doi: 10.3866/PKU.DXHX201905022

• Chemistry Laboratory • Previous Articles Next Articles

Testing the Buffer Capacity of Baby Wipes: An Experiment Close to Life

Fan Yu^1,*(),Bao Li^2,*()

¹ Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, P. R. China
² School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China

Received:2019-05-06 Accepted:2019-07-03 Published:2019-07-26
Contact: Fan Yu,Bao Li E-mail:yufan0714@163.com;libao@hust.edu.cn
Supported by:
湖北省武汉市教育局(2014006);国家自然科学基金(51403079)

Abstract

Abstract:

In order to effectively enhance students' interest and enthusiasm in learning buffer solution, a case of introducing real daily necessities into laboratory teaching is recommended. The experimental design extends the property test to the baby wipe, and changes the content of the experiment into the verification of the working principle of wipe, instead of preparation of simple acid-base system and related verification experiments in the past. Through the implementation of this experiment, students generally reflected that it can effectively stimulate their enthusiasm and interest in learning buffer solution related contents, and ultimately promote them to recognize the characteristics and buffer mechanism of pH changes in buffer system.

Key words: Buffer solution, Baby wipe, Experimental design, Learning interest

Fan Yu,Bao Li. Testing the Buffer Capacity of Baby Wipes: An Experiment Close to Life[J].University Chemistry, 2020, 35(1): 76-79.

溶液体系	初始体积/mL	pH变化值	滴定管初始读数/mL	滴定管最终读数/mL	缓冲容量/(mol∙L⁻¹)
醋酸/醋酸钠缓冲体系Ⅰ	40.0	1.02	0.00	17.01	4.17 × 10⁻²
醋酸/醋酸钠缓冲体系Ⅱ	40.0	1.05	0.00	5.33	1.19 × 10⁻²
氯化铵/氨缓冲体系	40.0	1.01	0.00	16.9	4.18 × 10⁻²
去离子水	40.0	3.78	0.00	0.10	6.61 × 10⁻⁵
婴儿湿巾缓冲体系Ⅰ	40.0	1.05	0.00	1.13	1.88 × 10⁻³
婴儿湿巾缓冲体系Ⅱ	40.0	1.06	0.00	0.65	1.53 × 10⁻³
婴儿湿巾缓冲体系Ⅲ	40.0	1.11	0.00	0.44	1.27 × 10⁻³

溶液体系	初始体积/mL	pH变化值	滴定管初始读数/mL	滴定管最终读数/mL	缓冲容量/(mol∙L⁻¹)
醋酸/醋酸钠缓冲体系Ⅰ	40.0	1.04	0.00	16.8	4.04 × 10⁻²
醋酸/醋酸钠缓冲体系Ⅱ	40.0	1.03	0.00	5.87	1.42 × 10⁻²
氯化铵/氨缓冲体系	40.0	1.03	0.00	16.5	4.00 × 10⁻²
去离子水	40.0	3.64	0.00	0.10	6.67 × 10⁻⁵
婴儿湿巾缓冲体系Ⅰ	40.0	1.07	0.00	1.25	1.79 × 10⁻³
婴儿湿巾缓冲体系Ⅱ	40.0	1.02	0.00	0.59	1.45 × 10⁻³
婴儿湿巾缓冲体系Ⅲ	40.0	1.15	0.00	0.41	1.36 × 10⁻³

1	孙逸明; 丁伟. 化学教育, 2017, 38 (9), 55.
2	张青芳; 侯正利; 郝一. 化学教育, 2015, 36 (22), 59.
3	周群力; 钱扬义. 化学教育, 2014, 35 (9), 75. doi: 10.3969/j.issn.1003-3807.2014.09.020
4	张天斌; 李政; 许海. 化学教育, 2014, 35 (4), 21. doi: 10.3969/j.issn.1003-3807.2014.04.007
5	陈邦进. 化学教育, 2013, 34 (3), 1. doi: 10.3969/j.issn.1003-3807.2013.03.001
6	景泽雯; 龙琪; 朱子丰; 王冬黎. 化学教育, 2010, 31 (11), 68. doi: 10.3969/j.issn.1003-3807.2010.11.023
7	于丽薇. 化学教育, 2002, 23 (6), 3. doi: 10.3969/j.issn.1003-3807.2002.06.002

[1]	Ya'ni Wang, Xue-Peng Zhang. Investigations on Allyl Cation Rotational Isomerism: A Computational Experiment Design [J]. University Chemistry, 2023, 38(2): 197-206.
[2]	Yan Chen, Mingyan Tan, Anna Tang, Deming Kong. "Eliminating the False and Preserving the True": An Discussion on the Experiment of a Covalent Organic Polymer Fluorescence Anti-Counterfeiting Material [J]. University Chemistry, 2023, 38(1): 161-168.
[3]	Yuanchao Wang, Heyong Cheng. Design of a Comprehensive Experiment for Determination of Each Component in Industrial Mixed Alkali [J]. University Chemistry, 2023, 38(1): 199-205.
[4]	Lingling Li, Quan Lan, Yuan Zheng, Jun Jiang, Zhenggen Zha. More Than an Armchair Strategist: A Case Study on Teaching Second-Year Undergraduates How to Connect Fundamental Principles and the Literatures to Experimental Design and Optimization in Organic Chemistry Laboratory Courses [J]. University Chemistry, 2022, 37(2): 2109014-.
[5]	Shujuan Gao, Shanshan Jiang, Yan Wang, Linzhi Li, Gaiqing Zhang. Infiltration of the Recessive Ideological and Political Education Elements in the Teaching of "Buffer Solution" in Inorganic Chemistry Course [J]. University Chemistry, 2022, 37(10): 2107015-0.
[6]	Yujie Jin, Liyun Yao, Song Yu, Yuxing Cai, Ning Li. Design and Practice of Infiltrative Course Ideology and Politics in Instrumental Analysis Laboratory: Taking Gas Chromatography Experiment as an Example [J]. University Chemistry, 2022, 37(10): 2203008-0.
[7]	Tongwei Wang. Analysis of Composition to Determine the Strongest Buffer Capacity in the Buffer Solution [J]. University Chemistry, 2021, 36(6): 2101038-.
[8]	Yanqin Li, Jie Zhang, Wei Wang, Jinfeng Yang, Feng Yu. Laboratory Teaching Exploration for Science and Education Integration under Background of "Double First-Class" Construction: Taking TiO₂ for Photocatalytic Degradation of Dyes as an Example [J]. University Chemistry, 2021, 36(6): 2008044-.
[9]	Qiuping Li, Lin Zhu, Minjie Hu, Lijuan Luo, Hao Wu. Ideological and Political Education Implantation and Experimental Design of Alcohol-Based Hand Sanitizer Gel [J]. University Chemistry, 2021, 36(6): 2008007-.
[10]	Lingling Feng, Qiong Chen, Yumeng Li, Jinghan Liang, Zhou Wang. Preparation of an Important Enzyme FBP/SBPase from Cyanobacteria and Analysis of Interaction between Target Enzyme and Ligand: One Comprehensive Experiment Based on Research [J]. University Chemistry, 2021, 36(6): 2006087-.
[11]	Hao Wang, Hongyu Liu, Miaojin Wei. Application of Python in the Design of Analytical Chemistry Laboratory [J]. University Chemistry, 2020, 35(9): 198-204.
[12]	Zhiming Wu, Jianing Zhang, Shiju Li, Xinhua Xu, Meichuan Liu. Molecularly Imprinted Electrode Prepared by Electropolymerization Method and its Characterization [J]. University Chemistry, 2020, 35(4): 132-136.
[13]	Fengfeng YAO,Chungeng YAN,Wei ZHANG,Jiani MA,Junlong ZHAO,Gang XIE. Northwest University: Sowing the Seed of Chemistry and Weaving the Dream of Science, Development and Reflection of the Public Science Laboratory of Chemistry [J]. University Chemistry, 2019, 34(8): 160-166.
[14]	Tingting LI,Yingai PIAO,Jing ZHANG,Jingdong FENG,Yantao SUN. Experimental Design and Exploration of Separating n-Hexane and Cyclohexane by GC [J]. University Chemistry, 2019, 34(7): 73-78.
[15]	Zhengping QIAO,Mingda YIN,Xianfang XU,Huazhen HUANG,Sujun YAN,Huijuan PENG,Zongwan MAO. Synthesis of Metal-Organic Framework Nanocrystals and Research on Its Adsorption of Dye [J]. University Chemistry, 2018, 33(9): 75-81.

Testing the Buffer Capacity of Baby Wipes: An Experiment Close to Life

RichHTML

PDF

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 2

References 7

Related Articles 15

Metrics

Recommended 0