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Chemistry · 2022 · 2 marks
Aldehydes, Ketones and Carboxylic AcidsNomenclature and Structure of Carboxyl Group2 marksUnderstandvery short answer
CBSE 2022 · Region 4 · Set 1 · Q3
Write reasons for the following statements: (i) Benzoic acid does not undergo Friedel-Crafts reaction. (ii) Oxidation of aldehydes is easier than…
Write reasons for the following statements :
(i)
Benzoic acid does not undergo Friedel-Crafts reaction.
(ii)
Oxidation of aldehydes is easier than that of ketones.
Marking-scheme solution
(i) Benzoic acid do not undergo Friedel-Crafts reaction because the carboxyl group is deactivating and the catalyst aluminium chloride gets bonded to the carboxyl group.
(ii) Because of oxidation of aldehyde involves cleavage of C-H bond which is weaker than C-C bond of ketone.
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