Question

Which of the following pair of compounds on reactions form a substance having a fruity smell?

• A. ${\text{CH}}_3\text{CHO}$ and ${\text{CH}}_3{\text{CH}}_2{\text{CH}}_2\text{COOH}$
• B. ${\text{CH}}_3\text{OH}$ and ${\text{CH}}_3{\text{CH}}_2{\text{CH}}_2\text{COOH}$
• C. ${\text{CH}}_3{\text{COCH}}_2$ and ${\text{CH}}_3{\text{CH}}_2\text{OH}$
• D. ${\text{CH}}_3{\text{COCH}}_2$ and ${\text{CH}}_3{\text{CH}}_2\text{CHO}$

Answer 1

The correct option is B ${\text{CH}}_3\text{OH}$ and ${\text{CH}}_3{\text{CH}}_2{\text{CH}}_2\text{COOH}$

Esters are compounds having fruity smell. An ester is formed when a carboxylic acid reacts with an alcohol in the presence of conc. ${\text{H}}_2{\text{SO}}_4$. This process is known as esterification.

The reaction of methanol and butanoic acid will form an ester called methyl butanoate.