Question detail
Which reagent is commonly used to oxidize aldehydes to carboxylic acids?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Aldehydes and ketones (A-level only)
Question
- A. Sodium hydroxide
- B. Potassium permanganate
- C. Sodium chloride
- D. Hydrochloric acid
Answer
Potassium permanganate
Explanation
Potassium permanganate (KMnO4) is a strong oxidizing agent that can oxidize aldehydes to carboxylic acids. It provides the necessary oxygen for the oxidation process.
Common mistake
Confusing Aldehydes and Ketones
Students often confuse aldehydes with ketones, thinking both can be oxidized to carboxylic acids.
Remember that only aldehydes can be oxidized to carboxylic acids, while ketones cannot. Use the structure of the carbonyl group to identify them: aldehydes have the carbonyl group at the end of the carbon chain, while ketones have it within the chain.
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