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a. Describe the following giving linked ...

a. Describe the following giving linked chemical equations:
(i) Cannizzaro reaction,
(ii) Decarboxy lation.
b. Complete the following chemical equations:

Text Solution

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a. Cannizzaro reaction: Aldehydes which do not have an `alpha`- hydrogen atom, undergo self concentrated alkali.
In this raction, one molecule of the aldehyde is reduced to alcohol while another is oxidised to carboxylic acid salt.

(ii) Decarboxylation: Carboxylic acid lose `CO_(2)` to form hydrocarbons when their sodium or potassium salts are heated with sodalime. The reaction is known as de-carboylation.
`R-COONa underset(Delta)overset(NaOH+CaO)(to) R -H+Na_(2)CO_(3)`
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