Separation of Food Colorings via Liquid–Liquid Extraction: An At-Home Organic Chemistry Lab
Separation of Food Colorings via Liquid–Liquid Extraction: An At-Home Organic Chemistry Lab
复制标题
通过液液萃取分离食用色素:家庭有机化学实验室
DOI:
10.1021/acs.jchemed.0c01286
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发表时间:
2021
影响因子:
3
通讯作者:
Kozlowski, Marisa C.
中科院分区:
文献类型:
--
作者:
Orzolek, Brandon J.;Kozlowski, Marisa C.
Herein, we describe an accessible and safe organic chemistry lab experiment that can be completed at home. Liquid–liquid extraction is a fundamental organic chemistry lab experiment that touches on topics such as chemical structure, density, solubility, and acid–base chemistry. Given the increased demand for safe organic chemistry experiments that can be performed in the at-home environment, we have adapted the conventional wet lab liquid–liquid extraction experience by using food colorants. Students are first guided through sample questions to establish a basic understanding of solubility, acid–base chemistry, and separation via extraction techniques. Next, they are given unknown dye mixtures which they subject to liquid–liquid extraction using a plastic soda bottle with vegetable oil, water, white vinegar, and sodium bicarbonate. All materials are readily available and food-safe, making the experiment amenable to the at-home environment while still allowing students to physically engage in a foundational lab experiment.
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DOI:
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1990
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