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Acid-catalyzed dehydration-condensation reactions of carboxylic acids and alcohols produce chemicals called esters.



i. Using carbon skeletal notation, write the dehydration-condensation reaction that occurs between ethanol and butanoic acid.

ii. What is the name of this ester?

Verified Answer :

Final answer:

The dehydration-condensation reaction between ethanol and butanoic acid produces ethyl butanoate and water. The skeletal notation illustrates the attachment of the ethyl group from ethanol to the carbon of butanoic acid, resulting in the formation of an ester. Ethyl butanoate is the name of the ester formed in this reaction.


Explanation:

Dehydration-Condensation Reaction of Ethanol and Butanoic Acid

In this reaction, ethanol (C2H5OH) and butanoic acid (C3H7O2H) undergo a dehydration-condensation reaction to form an ester. The process can be represented using carbon skeletal notation, where we show the carbon skeletons of the reactants and the product.

i. Reaction Representation

The skeletal representation of the reaction is as follows:

C2H5OH + C3H7O2H → C5H10O2 + H2O

Structurally, the ethyl group from ethanol attaches to the carbonyl carbon of butanoic acid, eliminating a water molecule (H2O) in the process.

ii. Name of the Ester

The ester formed from this reaction is called ethyl butanoate, which is characterized by a pleasant fruity aroma and is often used in flavorings and fragrances.


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