Which one of the following compounds is a ketone?
Correct answer: B. CH3 ― CO ― CH2 ― CH3
- A. CH3 ― O ― CH2 ― CH3
- B. CH3 ― CO ― CH2 ― CH3
- C. CH3COCOOH
- D. CH3 ― CH2CHO
Explanation
Ketone has a general formula of R- CO-R, meaning that there are two radical groups surrounding a carbonyl group(C=0).This is shown in option B only. The radical group surrounds O in option A so it is either, not a ketone. Option C has a COOH group so it is a carboxylic acid. Option D has a CHO group, making it aldehyde. Ketone has a general formula of R- CO-R, meaning that there are two radical groupssurrounding a carbonyl group(C=0).This is shown in option B only. The radical group surrounds O in option A so it is either, not a ketone. Option C has a COOH group so it is a carboxylic acid. Option D has a CHO group, making it aldehyde.p surrounds O in option A so it is either, not a ketone. Option C has a COOH group so it is a carboxylic acid. Option D has a CHO group, making it aldehyde.
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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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