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Chemistry · 2025 · 2 marks
Aldehydes, Ketones and Carboxylic AcidsPreparation of Aldehydes and Ketones2 marksApplyvery short answer
CBSE 2025 · Region 5 · Set 1 · Q21
(a) How can acetaldehyde be prepared from acetyl chloride? (b) Propanal is more reactive than propanone towards nucleophilic addition reaction. Give…
(a)
How can acetaldehyde be prepared from acetyl chloride ?
(b)
Propanal is more reactive than propanone towards nucleophilic addition reaction. Give reason.
Marking-scheme solution
(a)
Acetyl chloride is hydrogenated over catalyst, palladium-barium sulphate to prepare
acetaldehyde /
(b)
Due to less steric hinderance and greater electrophilicity of carbonyl carbon in propanal than
propanone. / Due to more steric hinderance and less electrophilicity of carbonyl carbon in
propanone than propanal
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