Which of the following is the IUPAC name for acetaldehye?
Correct answer: B. Ethanal
- A. Methanal
- B. Ethanal
- C. Propanal
- D. Butanal
Explanation
Acetaldehyde is a common name. The IUPAC name is based on the longest carbon chain; with two carbon atoms, the parent alkane is ethane. The "-al" suffix for an aldehyde gives the name ethanal.
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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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