16 Questions
Match the following with their correct descriptions:
Phenols = Have a hydroxyl group attached to aromatic carbon Alcohols = Have a hydroxyl group attached to aliphatic carbon Carbolic acid = Another name for phenol with direct attachment to benzene Cresols = Common name for methyl phenols
Match the following with their correct statements:
Nomenclature of Phenols = Numbering of the ring begins at the hydroxyl-substituted carbon Preparation of Phenol = Phenol reacts with NaOH to produce salt and water Acidity of Phenols = Phenols are stronger acids than alcohols due to resonance stabilization by the aromatic ring Physical Properties of Phenols = Phenols can cause chemical burns and require careful handling
Match the following with their correct order in nomenclature:
Substituents in Phenols = Cited in alphabetical order Numbering in Phenol Ring = Begins at the hydroxyl-substituted carbon and proceeds for lower numbers Naming Parent Compound in Phenols = Carboxyl and acyl groups take precedence over the phenolic hydroxyl as parent name Special Names for Dihydroxy Benzene = Have trivial names
Match the following with their correct reactions:
Alcohols Reactivity with NaOH = Do not produce salt and water like phenols do Phenol Reactivity with NaOH = Produces salt and water upon reaction with NaOH Acidity Comparison between Alcohols and Phenols = Phenoxide anion from phenol is more stable due to resonance stabilization by aromatic ring Anion Derived from Alcohol Deprotonating = Alkoxide
Match the following with their preparation method:
Phenol = Hydrolysis of diazonium salt Sodium Phenoxide = Reaction of haloarenes with NaOH under high temp. and pressure Anisole = Prepared from sodium phenoxide Phenolic Ketones = Fries rearrangement reaction
Match the following with their properties or reactions:
Phenols = Undergo electrophilic substitution reactions Phenol = Can be oxidized
Match the following with their reactivity towards acids:
Phenol = Treated with acid to produce phenol Sodium Phenoxide = Prepared by reacting with NaOH Anisole = Derived from sodium phenoxide Phenolic Ketones = Prepared via Fries rearrangement reaction
Match the following with their electrophilic substitution reactions:
Phenols = Undergo acylation reactions Anisole = Can be prepared via O-acylation Phenolic Ketones = Prepared indirectly through Fries rearrangement
Match the following with their acidity properties:
Phenols = React as acids to form salts Sodium Phenoxide = Derived from phenol in basic medium Anisole = Can be prepared from sodium phenoxide Phenolic Ketones = Prepared via Fries rearrangement from aryl carboxylic acid esters
Match the following with their naming conventions:
Phenol = Named due to hydroxy group on benzene ring Anisole = 'Methoxybenzene' based on its structure Sodium Phenoxide = 'Sodium salt of phenol' based on its composition Phenolic Ketones = 'Ketones derived from phenols' based on their structure
Match the following pairs with the correct order of acidity:
Phenol = methanol p-nitrophenol = o-nitrophenol
Match the following pairs with the correct method of preparation of phenols:
From Benzene sulfonic acid = From hydrolysis of diazonium salt From cumene = From hydrolysis of diazonium salt From haloarenes = From cumene
Match the following pairs with the correct impact on acidity:
EWG (electron withdrawing group) = increase acidity EDG (electron donating group) = decrease acidity Substituent effects on acidity = increase acidity Increasing acidity = decrease acidity
Match the following pairs with the correct physical property impact:
NO2 & CN & C=O = increase acidity m-Nitrophenol = more acidic than phenol p-hydroxybenzaldehyde = more acidic than phenol Carbonyl group in para position = stabilizes a phenoxide ion
Match the following pairs with the correct reaction involved:
Cumene reacts with air at high temperature by benzylic oxidation through a radical mechanism to form cumene hydroperoxide = conversion into phenol and acetone by treatment with acid Benzylic oxidation of Cumene = formation of cumene hydroperoxide
Match the following pairs with the correct impact on a phenoxide ion:
Carbonyl group in para position = directly conjugated to the phenoxide oxygen and stabilizes it to a smaller extent m-Nitro group not directly conjugated to the phenoxide oxygen = stabilizes a phenoxide ion to a smaller extent
Test your knowledge on the preparation methods and reactions of phenol. Questions cover topics such as hydrolysis of diazonium salt, conversion from haloarenes to phenol, and various reactions involving phenols and OH groups on benzene rings.
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