1.

Describe the Cannizaro reaction

Answer» Cannizaro reaction : On treating with concentrated alkali, aldehydes which do not have any `alpha`-hydrogen atom, undergo self oxidation and reduction (disproptionation) reaction. This reaction is called cannizaro reaction.
`to` As a result , one molecules of aldehyde is reduced to alcohol while another is oxidised to carboxylic acid salt.
For example
`H-overset(H)overset(|)C=O+H-overset(H)overset(|)C=O overset("Conc. NaOH")to underset("Methanol")(H-underset(H)underset(|)overset(H)overset(|)C-OH)-underset("Sodium methanoate")(underset(ONa)(+HC=O))`


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