Moderate

The formation of an enolate ion from a ketone requires:

Correct answer: B. A strong base

  • A. A strong acid
  • B. A strong base
  • C. A strong oxidizing agent
  • D. A strong reducing agent

Explanation

An enolate ion is formed by the removal of an α-hydrogen (a proton) from a carbonyl compound. Since α-hydrogens are only weakly acidic, a strong base (like LDA or an alkoxide) is required to deprotonate the α-carbon and form the enolate.

Last updated

About Aldehydes and Ketones

Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.

Practise Aldehydes and Ketones

679 free Aldehydes and Ketones MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Chemistry questions like this

Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions