Treatment of propionaldehyde with Dil. the NaOH solution gives:
Correct answer: C. CH3 CH2 CH (OH) CH(CH3) CHO
- A. CH3 CH2COOCH2C2H5
- B. CH3 CH2 CHOH CH2 CH2 CHO
- C. CH3 CH2 CH (OH) CH(CH3) CHO
- D. CH3 CH2 COCH2 CH2 CHO
Explanation
When propionaldehyde (CH3CH2CHO) reacts with a dilute NaOH (sodium hydroxide) solution, it undergoes a nucleophilic addition reaction known as an aldol condensation. In this reaction, the aldehyde group of propionaldehyde is attacked by the hydroxide ion (OH-) from the NaOH solution.
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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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