University Chemistry ›› 2020, Vol. 35 ›› Issue (9): 132-140.doi: 10.3866/PKU.DXHX201910009

• Chemistry Laboratory • Previous Articles     Next Articles

Derivation and Exploration of Methyl Orange Preparation Experiment

Qianxiao Wang1, Shimian Li1, Kun Wang1, Jinmei Zhou1,2,*(), Lirong Lin1,*()   

  1. 1 College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
    2 National Demonstration Center for Experimental Chemistry Education, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
  • Received:2019-10-08 Accepted:2019-12-23 Published:2020-01-02
  • Contact: Jinmei Zhou,Lirong Lin E-mail:jmzhou@xmu.edu.cn;linlr@xmu.edu.cn

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Abstract:

Preparation of methyl orange is regarded as a classical basic experiment in organic chemistry. Based on the derivation of methyl orange preparation, we design a mini comprehensive experiment by combining the synthetic experiment of azobenzene compounds with spectral analysis to achieve the multi-disciplinary interactions. It not only can guide students to further understand properties of azobenzene compounds, but also can help to improve the synthetic operation skills of solid organic compounds and master the spectral analysis methods. In the meantime, we hope to break the limitation of basic experimental training and make it easier for students to cultivate scientific thinking methods.

Key words: Methyl orange, Azobenzene compounds, Teaching improvement