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Notes0610 - Experiment 1a Decolorization Decolorization...

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Experiment 1a: Decolorization Decolorization: This technique uses activated charcoal (also known as decolorizing carbon) to remove color impurities from starting materials or products. The activated carbon consists of very fine particles with a very large surface area for absorbing large polar molecules (such as colored compounds). You must be careful to avoid using too large amount of carbon because then you risk absorbing your product. 1
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Experiment 1b: Acid – Base Extraction Acid – Base Extraction: It is a liquid-liquid extraction that is based on the acid/base properties of compounds. The extraction is performed by using two immiscible solvents, one is aqueous and the other one organic. If a compound is soluble in water then Acid-Base extraction is not the appropriate method of separation. On the other hand, if a compound is insoluble in water and it has acid/base properties then it can be extracted by using Acid-Base Extraction. Solubility in Water Rules Ionic Compounds: Sufonates, Carboxylates, and Aminium Salts. H-Bonding Compounds: Alcohols, Carboxylic Acids (4C or less) Phenol is soluble, others are insoluble Amides (5C or less) Primary Amines (4C or less) Secondary Amines (6C or less)
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