Dry distillation of calcium acetate results in the formation of_________________?
Correct answer: D. acetone
- A. formaldehyde
- B. acetaldehyde
- C. methane
- D. acetone
Explanation
On dry distillation, calcium acetate undergoes ketonic decarboxylation: (CH3COO)2Ca gives CH3COCH3, acetone, along with calcium carbonate. The likely mistake is choosing acetaldehyde because acetate contains an acetyl group, but the reaction forms a ketone by combining two acetate units.
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About Preparation of Aldehydes and Ketones
Aldehydes and ketones are prepared mainly by controlled oxidation or dehydrogenation of primary and secondary alcohols, respectively. The topic also includes ozonolysis of alkenes, hydration of alkynes and preparation through acyl derivatives, with attention to why primary alcohols can give aldehydes whereas secondary alcohols give ketones.
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679 free Aldehydes and Ketones MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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