Answer :
Final answer:
The reaction of a Grignard reagent with a nitrile followed by acid hydrolysis yields a ketone (Answer B).
Explanation:
When a Grignard reagent reacts with a nitrile, such as acetonitrile, it attacks the electrophilic carbon to form an imine salt. Upon acid hydrolysis, this imine salt is then converted into a ketone. Therefore, the product of the reaction of a Grignard reagent with acetonitrile, followed by acid hydrolysis, is a ketone (Answer B).
