Question

The acid formed when propyl magnesium bromide is treated with CO_2 followed by acid hydrolysis is:

• A. C_3H_7COOH
• B. C_2H_5COOH
• C. CH_3COOH
• D. C_3H_7OH

Hint:

Grignard reagents react with CO_2 to form carboxylates, which can be hydrolyzed to yield carboxylic acids.

Answer 1

The Correct Option is B

Step 1: Understanding the reaction. Propyl magnesium bromide is a Grignard reagent that reacts with CO_2 to form a carboxylate anion, which is then hydrolyzed to form a carboxylic acid. 

Step 2: Conclusion. Thus, the acid formed is propionic acid (C_3H_7COOH), corresponding to option (A). \vspace{10pt}