The presence of unsaturation can be tested with Baeyer's reagent or the bromine test. Baeyer's reagent, which is cold, dilute, alkaline potassium permanganate (\(KMnO_{4}\)), will change from purple to brown if a compound has double or triple bonds. Similarly, bromine solution, which is an orange-red color, will be decolorized by unsaturated compounds.
The presence of unsaturation can be tested with _______?
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