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Explain Cannizzaro reaction with an exam...

Explain Cannizzaro reaction with an example.

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Aldehydes with no `alpha` - hydrogen atom when treated with concentrated alkali (NaOH or KOH), undergo self-oxidation and reduction (disproportionation) to give carboxylic acid salt and alcohol. This is called Cannizzaro.s reaction.
`2HCHO + "Conc."KOH to HCOOK + CH_3OH`
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