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Identifying of an organic unknown? Identification of an organic unknown? Aim: In this investigation I will get a number of unknown organic compounds. Which I have to identify by using a number of different chemical and physical techniques. The only thing is known about the compound is that it contains one of the functional group: alcohol, aldehyde, ketone, carboxylic acid, phenol and ester. Therefore I devised a sequence of tests that would identify which one of the groups the sample contains. The flow chart below shows the chemical techniques, which I will use to identify the functional group of the unknown. 1: Test with universal indicator. Explanation: Aqueous phenol decolourises bromine water to form a white precipitate of 2, 4, 6- tribromophenol. The presence of OH group in the phenol increases the inclination of the benzene ring to electrophilic attack. The oxygen in the OH group has a...

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