Question Detail

CHM 102 Practice Questions Objective Question

Question

n-Propylmagnesium bromide on treatment with carbon dioxide and further hydrolysis gives :
Options
A Acetic acid
B Propanoic acid
C Butanoic acid
Correct Answer
D Formic acid
Correct Answer

Option C is the correct answer.

Detailed Explanation

n-Propylmagnesium bromide (CH3CH2CH2MgBr) reacts with CO2 to form a carboxylate salt, which upon acid hydrolysis gives butanoic acid (CH3CH2CH2COOH). The Grignard reagent adds to CO2 to form a carboxylic acid with one more carbon.

Hint

What carboxylic acid is formed from a Grignard reagent and CO2?

Question Info