Practice Acidity Of A-hydrogens Of Aldehydes And Ketones (8.4.4.1)

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What does the α-hydrogen refer to in carbonyl compounds?
Show hintHide hint
Think about the location of the carbonyl group.
Question 2.
What is formed from the aldol reaction?
Show hintHide hint
Check the identities of the starting materials.
3Question 3.
What is the primary product of the aldol reaction between two moles of ethanal?
- 2-Methylbut-2-enal
- 3-Hydroxybutanal
- α,β-unsaturated carbonyl compound
Show hintHide hint
Consider the structure of the starting material.
4Question 4.
Is the carbonyl group responsible for increasing the acidity of the adjacent hydrogen?
- True
- False
Show hintHide hint
Think about the effect of electronegativity.
Question 5.
Predict the major products of self and cross-aldol condensation when benzaldehyde is used with both ethanal and propanal.
Show hintHide hint
Think about where the hydrogens are located.
Question 6.
Provide a detailed mechanism for the formation of but-2-enal from the aldol reaction of two molecules of ethanal.
Show hintHide hint
Visualize the steps and the structures formed at each stage.

4 more questions in this section. Enroll free to practise them all.