The reaction between a carboxylic acid and an alcohol in the presence of concentrated sulphuric acid is called
- A. saponification
- B. esterification
- C. hydrolysis
- D. decarboxylation
Explanation
Esterification joins the two molecules with the elimination of water and is reversible, so the sulphuric acid serves both as catalyst and as a dehydrating agent that pulls the equilibrium towards the ester. Saponification is the reverse process carried out with alkali, which produces a soap from a fat. Decarboxylation removes carbon dioxide and shortens the chain.
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