CHM 2123 Lecture Notes - Lecture 1: Sodium Bicarbonate, Deprotonation, Catechin
2 Nov 2015
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Document Summary
Caffeine is found in many world renowned drinks, such as energy drinks, coffee, and most importantly for this lab, tea. This laboratory focuses on extraction of caffeine from strongly brewed black tea, which can contain anywhere from 30-75 mg of caffeine per every 250 ml of beverage. The purpose of this experiment was to review techniques from chm 1321 laboratories. The techniques used in this experiment were required to isolate and purify an organic product using extraction and purification through a newly introduced method: sublimation. In addition, students refreshed on thin layer chromatography (tlc) theory and process. Only part a was performed in this experiment. Extraction of organic products is performed by the isolation of organic and aqueous layers in a separatory flask. Through isolation, students are able to focus of extracting their desired product. In this experiment, sublimation is used to purify the extracted caffeine product.
