WJEC Chemistry Unit 4; chemical tests

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Last updated: April 16, 2018

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Test/Reaction	Colour
Phenol with Bromine	Orange to Colourless
Phenol with aqueous Iron(III) Chloride	to Purple
Oxidation with acidified Potassium Dichromate	Orange to Green
Oxidation with acidified Potassium Manganate	Purple to Colourless
Tollen's Reagent	Silver Mirror
Fehling's Reagent	Deep Blue to Orange-Red
2,4-DNP	Orange-Red Solid
Iodoform	Colourless to Yellow
Coupling Reaction with Benzenediazonium Salts	Yellow/Orange/Red

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