Doc Brown's Chemistry Qualitative Methods of Analysis Revision Notes

An itroduction to emission spectra and flame tests for the identification of elements.

Emission Spectroscopy: Element identification

The material remaining on the column contains CBD and other cannabinoid acetates which can be recovered with ethanol and worked up.(21) 6.5 ~ Identification Colorimetric tests are the simplest method of identifying cannabinoids.

GCSE Chemistry, Year 10, Preparation of Salts page

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Identification tests for Pb2+ and Ag+ (Ag2SO4 is moderately soluble) are described above (Cations that form Insoluble Chlorides). Ba2+, Sr2+, and Ca2+ form moderately soluble sulfates.