Question

Which of the following has the most acidic hydrogen?

Options

• 3 – hexanone

• 2, 4 – hexanedione

• 2 – 5 – hexanedione

• 2, 3 – hexandione

Answer 1

2, 4 – hexanedione

Explanation:

The most acidic is hydrogen in 2, 4 hexanedione (a 1, 3 – diketone). This is due to the carb onion that remained after the removal of H⁺ resonance in this case.