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- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_Lab_Techniques_(Nichols)In this resource you will find theory and procedures on the main organic lab techniques (chromatography, crystallization, extraction, distillation) as well as general concepts on how to set up and hea...In this resource you will find theory and procedures on the main organic lab techniques (chromatography, crystallization, extraction, distillation) as well as general concepts on how to set up and heat apparatuses (see the Table of Contents tab for a more complete listing of topics). All procedures are accompanied by step-by-step pictures, and graphics are heavily utilized throughout the resource.
- https://chem.libretexts.org/Courses/SUNY_Oneonta/Chem_221%3A_Organic_Chemistry_I_(Bennett)/2%3ALab_Textbook_(Nichols)In this resource you will find theory and procedures on the main organic lab techniques (chromatography, crystallization, extraction, distillation) as well as general concepts on how to set up and hea...In this resource you will find theory and procedures on the main organic lab techniques (chromatography, crystallization, extraction, distillation) as well as general concepts on how to set up and heat apparatuses (see the Table of Contents tab for a more complete listing of topics). All procedures are accompanied by step-by-step pictures, and graphics are heavily utilized throughout the resource.
- https://chem.libretexts.org/Courses/Bennington_College/Chemistry_-_An_Integrated_Approach_(Bullock)/Chapter_9%3A_Laboratory_Exercises/Extraction_of_Caffeine_From_Tea_LeavesThese charges help explain why caffeine had such a low R f value on the TLC results you saw last week; the charged portions of the molecule are strongly attracted to the charged particles on the TLC p...These charges help explain why caffeine had such a low R f value on the TLC results you saw last week; the charged portions of the molecule are strongly attracted to the charged particles on the TLC plate and resist moving with the eluent. When the tea bags have cooled, squeeze the liquid out of them and add the liquid to the rest of the tea/sodium carbonate mixture; the tea bags can be thrown out in the regular trash at this point.
