1. 有机化学实验中的几个细节问题探讨.
- Author
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王金权, 钱国庆, 王鑫, 徐海青, 高晓燕, 陈小芳, 陈晓娟, and 程晓春
- Subjects
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ORGANIC chemistry , *CHEMISTRY experiments , *FILTER paper , *ACID catalysts , *SULFURIC acid , *ETHYL acetate - Abstract
Organic chemistry experiment is an important part of organic chemistry. It can support organic chemistry theory teaching by experimental verification. However, some organic chemistry experiment textbooks cannot clearly describe some experimental details or ambiguously introduce some experimental concept which cause some experiment cannot be carried out. For example, in the experiment of distillation, the temperature of the first drop of condensation is ambiguously expressed . In the experiment of recrystallization and the process of filtering insoluble substance, it can expand error by using filter paper. In the experiment of ethyl acetate synthesis, concentrated sulfuric acid as catalyst, it can easily appear carbonization black phenomenon. The above three problems are thoroughly analyzed and discussed in this paper. New methods and advice are put forward and thoroughly dissolved the above three problems. Great teaching result is achieved at last. [ABSTRACT FROM AUTHOR]
- Published
- 2019