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Formaldehyde and benzaldehyde give Cannizaro reaction but acetaldehyde does not - account for this. |
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Answer» SOLUTION :(i) Cannizzaro reaction is a redox reaction which takes place only in aldehydes which do not have `alpha` - HYDROGEN ATOM. (ii) Formaldehyde (HCHO) and BENZALDEHYDE `(C_(6)H_(5)CHO)` do not have `alpha` - hydrogen atom and so they undergo Cannizzaro reaction. (iii) But acetaldehyde `CH_(3)CHO` contains `3alpha` - H atoms and it does not undergoo Cannizzaro reaction. |
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