Esterification reaction
The reaction between Acid and an Alcohol to produce ester as the product is called Esterification reaction. During this reaction a molecule of water is eliminated.
Ex: CH₃COOH + C₂H₅OH →CH₃COOC₂H₅ + H₂O
In the above reaction Ethanoic acid reacted Ethyl alcohol to form an ester Ethyl Acetate and water molecule.