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Sample Problem 3. The molecular formula of an ester is $C_{3} H_{7} C O O C_{2} H_{5}$ . Write the molecular formula of the alcohol and the acid from which it might be prepared.

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Solution

Dear Student,

C₃H₇COOC₂H₅, is an ester , ethyl butyrate.

Left side part of formula of ether (C₃H₇CO-) containing CO part is derived from acid whereas rightside part (-OC₂H₅) id derived from alcohol.

So, in C₃H₇COOC₂H₅, the acid will be C₃H₇COOH, butanoic acid and the alcohol will be C₂H₅OH, ethanol.

Reaction of butanoic acid and ethanol in presence of sulphuric acid yields ethyl butyrate.

C₃H₇COOH + C₂H₅OH $\overset{C o n c . H 2 S O 4}{\to}$ C₃H₇COOC₂H₅+ H₂O

Regards,

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Solve this: Sample Problem 3. The molecular formula of an ester is C3H7COOC2H5. Write the molecular formula of the alcohol and the acid from which it might be prepared.

Solve this:
Sample Problem 3. The molecular formula of an ester is $C_{3} H_{7} C O O C_{2} H_{5}$ . Write the molecular formula of the alcohol and the acid from which it might be prepared.