explain cannizzaro reaction with suitable example for 4marks
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The Cannizzaro reaction is when a non-enolizable aldehyde reacts with itself in a strong base, such as sodium hydroxide (NaOH), to form a carboxylic acid and an alcohol. ... Two of the most common non-enolizable aldehydes are formaldehyde and benzaldehyde.
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Aldehydes which do not have a α-hydrogen atom, undergo self-oxidation and reduction (disproportionation) reaction on heating with concentrated alkali.
In this reaction, one molecule of the aldehyde is reduced to alcohol while another is oxidized to carboxylic acid salt.2HCHO+KOH → CH
3
−OH+HCOOK
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