Alcohol phenol and ether
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Questions and Answers

Which compound is formed by the oxidation of aldehydes?

  • Carboxylic acid (correct)
  • Ketone
  • Alcohol
  • Ester

Which functional group is present in aldehydes and ketones?

  • Alkene group
  • Hydroxyl group
  • Carbonyl group (correct)
  • Amine group

In which functional group is the carbonyl carbon bonded to an oxygen and an -OH group?

  • Aldehyde
  • Carboxylic acid (correct)
  • Ketone
  • Ester

Which of the following is true about the acidity of phenol?

<p>Phenol is more acidic than alcohols due to the resonance stabilization of the phenoxide ion (C)</p> Signup and view all the answers

What is a characteristic feature of ethers?

<p>Ethers are more soluble in water than alcohols of similar molecular weight (D)</p> Signup and view all the answers

What is a common method for the preparation of alcohols?

<p>Hydration of alkenes in the presence of an acid catalyst (C)</p> Signup and view all the answers

Flashcards

Aldehyde

A class of organic compounds containing a carbonyl group (C=O) where the carbonyl carbon is bonded to one hydrogen atom and one alkyl or aryl group.

Ketone

A class of organic compounds containing a carbonyl group (C=O) where the carbonyl carbon is bonded to two alkyl or aryl groups.

Carboxylic acid

A class of organic compounds containing a carboxyl group (-COOH) where the carbonyl carbon atom is bonded to an -OH group and an alkyl or aryl group.

Why is phenol more acidic?

The reactivity of phenol is enhanced due to the resonance stabilization of the phenoxide ion, making it more acidic than alcohols.

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Why are ethers more soluble in water?

Ethers have a lower tendency to form hydrogen bonds compared to alcohols, leading to weaker intermolecular forces and higher solubility in water.

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How to prepare alcohols?

The addition of water to an alkene in the presence of an acid catalyst leads to the formation of an alcohol.

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Study Notes

Carboxylic Acids

  • Carboxylic acids are formed by the oxidation of aldehydes.

Aldehydes and Ketones

  • Aldehydes and ketones have a carbonyl functional group in common.
  • In aldehydes and ketones, the carbonyl carbon is bonded to a carbon atom and a hydrogen or an alkyl group respectively.

Carboxyl Functional Group

  • The carboxyl functional group is characterized by the carbonyl carbon being bonded to an oxygen and an -OH group.

Phenol Acidity

  • Phenol is more acidic than aliphatic alcohols due to the resonance stabilization of the phenoxide ion.

Ethers

  • A characteristic feature of ethers is that they are neutral compounds and do not react with NaOH.

Alcohols Preparation

  • A common method for the preparation of alcohols is the hydration of alkenes in the presence of an acid catalyst.

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Description

Test your knowledge of aldehydes, ketones, and carboxylic acids with this quiz! Identify the functional group present in aldehydes and ketones, learn about the compound formed by the oxidation of aldehydes, and discover which functional group features a carbonyl carbon bonded to an oxygen and an -OH group.

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