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Which of the following statements is correct for ketones? A - Scottish Highers Chemistry - Question 11 - 2015
Question 11
Which of the following statements is correct for ketones? A. They are formed by oxidation of tertiary alcohols. B. They contain the group C. They contain a carbox... show full transcript
Worked Solution & Example Answer:Which of the following statements is correct for ketones? A - Scottish Highers Chemistry - Question 11 - 2015
Step 1
D. They will not react with Fehling's solution.
Answer
Ketones are characterized by the presence of a carbonyl group (C=O) bonded to two alkyl groups. In contrast to aldehydes, ketones do not typically react with Fehling's solution, which is used to test for reducing sugars and aldehydes. The other statements are incorrect because:
- A: Ketones are formed by the oxidation of secondary alcohols, not tertiary alcohols.
- B: While ketones contain a carbonyl group, the representation may lead to confusion with aldehydes as the latter has a hydrogen atom attached to the carbonyl carbon.
- C: Ketones do not contain a carboxyl group (which is -COOH); this is characteristic of carboxylic acids.