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Citation: TIAN Xiaocong, LIU Bin, LU Changsheng, WANG Fengbin. Application of Problem-Oriented Teaching in General Chemistry Laboratory Classroom: A Case Study of “Titration Conditions on the Content Determination of Copper in K₂[Cu(C₂O₄)₂]”[J]. University Chemistry, ;2018, 33(12): 46-50. doi: 10.3866/PKU.DXHX201804012 shu

Application of Problem-Oriented Teaching in General Chemistry Laboratory Classroom: A Case Study of “Titration Conditions on the Content Determination of Copper in K₂[Cu(C₂O₄)₂]”

National Demonstration Center for Experimental Chemistry Education(Nanjing University), School of Chemistry & Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China

Received Date: 10 April 2018

Due to the facts that textbook-obedience and termwise experimenting dominate in the general chemistry laboratory classrooms, we have designed and carried out the problem-oriented teaching in order to improve the motivation of learning among the students, where the student-centered exploratory studying and practicing mode is highly desired. Problem-oriented teaching does not lead to exclusive resolutions to specific problems or experiments. Instead, it is supposed to induce multiple choices among student groups to complete experiments or resolve problems, where in-group/between-group discussions and practices would greatly activate the experimenting processes. Therefore, the sense of personal acquisition and self-progression during learning in laboratory classrooms can be easily achieved, while the good laboratory teaching will be realized as well. In this paper, we set up a problem-oriented teaching in optimizing the titration condition during measuring the copper content of K₂[Cu(C₂O₄)₂] using PAN (1-(2-pyridylazo)-2-naphthol) as the indicator. Grouping practices and experiments finally produced complementary results, as well as the satisfactory teaching and learning impacts.
- Laboratory teaching,
- Problem-oriented teaching,
- Measurement of copper content,
- PAN indicator
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Application of Problem-Oriented Teaching in General Chemistry Laboratory Classroom: A Case Study of “Titration Conditions on the Content Determination of Copper in K2[Cu(C2O4)2]”

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通讯作者: 陈斌, bchen63@163.com

Application of Problem-Oriented Teaching in General Chemistry Laboratory Classroom: A Case Study of “Titration Conditions on the Content Determination of Copper in K₂[Cu(C₂O₄)₂]”