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Phenols and Quinones

Ferric chloride test for phenols, nitration of acetaminophen, extraction of dichloroindophenol, oxidation of phenols with sodium periodate, nucleophilic addition to quinones, "purple benzene", oxidation of 2,6-Dit-butlhydoquinone, decolorization of crystal violet, and chameleon emulsion are demonstrated.

Ferric Chloride Test for Phenols


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12 seconds

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Aqueous ferric chloride is added to aqueous ethanolic solutions of each of cyclohexanol, phenol, acetyl salicylic acid (aspirin), and salicylic acid.

Nitration of Acetaminophen


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45 seconds

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Nitration of acetaminophen is demonstrated.

Extraction of Dichloroindophenol


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56 seconds

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Dichloroindophenol is extracted demonstrating "like dissolves like".

Oxidation of Phenols with Sodium Periodate


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1.2 MB
19 seconds

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Aqueous sodium periodate is added, to each of phenol, 1,2-dihydroxybenzene (catechol), 1,3-dihydroxybenzene (resorcinol), and 1,4-dihydroxybenzene (hydroquinone).

Nucleophilic Addition to Quinones


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14 seconds

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Aqueous K3Fe(CN)6 is added to each of hydroquinone and hydroquinone plus sodium benzenesulfinate.

Purple Benzene


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1.6 MB
26 seconds

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Crown ether 18-dibenzo-crown-6 is added to solid potassium permanganate in benzene.

Crown Ether Catalyzed Oxidation of 2,6-Di-tert-butylhydroquinone


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2.8 MB
44 seconds

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Crown Ether Catalyzed Oxidation of 2,6-Di-tert-butylhydroquinone

Decolorization of Crystal Violet


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1 MB
16 seconds

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Decolorization of Crystal Violet

Chameleon Emulsion


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1.6 MB
27 seconds

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Toluene (with Rhodamine B dye) is shaken with saturated aqueous (NH4)2SO4.