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Citation: Yanyuan Jia, Rong Rong, Jiaqi Ma, Shuo Guo. Distinctive Properties with the Same Ferrous Ion: FeSO₄·7H₂O and (NH₄)₂Fe(SO₄)₂·6H₂O: An Improvement of the Experiment on Preparation of Ferrous Ammonium Sulfate Hexahydrate[J]. University Chemistry, ;2023, 38(11): 155-162. doi: 10.3866/PKU.DXHX202302005 shu

Distinctive Properties with the Same Ferrous Ion: FeSO₄·7H₂O and (NH₄)₂Fe(SO₄)₂·6H₂O: An Improvement of the Experiment on Preparation of Ferrous Ammonium Sulfate Hexahydrate

College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China

Corresponding author: Yanyuan Jia, Shuo Guo,
Received Date: 3 February 2023

Based on the classic preparation experiment of ammonium ferrous sulfate, we improved it from a simple task-type preparation experiment into a highly comprehensive and complete open experiment integrating principle exploration, efficient preparation, open design and interesting observation. In the experiment, the single crystal structures of FeSO₄∙7H₂O and (NH₄)₂Fe(SO₄)₂∙6H₂O are introduced, the stability of crystal state ferrous sulfate and ammonium ferrous sulfate in the air is studied, and interesting experiments such as making artificial "crystal snow", "transparent crème", and "emerald" are designed. In the experiment, the stereo microscope was introduced to observe the crystal morphology. This improved experiment optimizes the allocation of class hours, enriches the teaching content, broadens the experimental dimension, deepens the understanding of the principle and professional knowledge of the students via comparing, and achieves the purpose of improving the students' innovation consciousness, laboratory skill, analysis ability and comprehensive ability.
- FeSO₄·7H₂O,
- (NH₄)₂Fe(SO₄)₂·6H₂O,
- Stability,
- Double salt
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Distinctive Properties with the Same Ferrous Ion: FeSO4·7H2O and (NH4)2Fe(SO4)2·6H2O: An Improvement of the Experiment on Preparation of Ferrous Ammonium Sulfate Hexahydrate

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通讯作者: 陈斌, bchen63@163.com

Distinctive Properties with the Same Ferrous Ion: FeSO₄·7H₂O and (NH₄)₂Fe(SO₄)₂·6H₂O: An Improvement of the Experiment on Preparation of Ferrous Ammonium Sulfate Hexahydrate