Which aldehyde is more reactive towards nucleophilic addition:
Correct answer: A. Formaldehyde
- A. Formaldehyde
- B. Acetaldehyde
- C. Butyraldehyde
- D. Propionaldehyde
Explanation
Formaldehyde (HCHO) is the most reactive towards nucleophilic addition among the given options. This is because formaldehyde is the simplest aldehyde with a hydrogen atom attached to the carbonyl carbon. The presence of a highly reactive hydrogen atom makes formaldehyde more susceptible to nucleophilic attack compared to other aldehydes. Therefore, option a is correct.
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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.
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