Question

Select the incorrect reaction among the following:

• A.
• B.
• C.
• D.

Answer 1

Answer: (B)

Answer 2

Let’s analyze each reaction:
1. Reaction (1):

This reaction shows the hydrolysis of an acyl chloride (acetyl chloride) to a carboxylic acid (acetic acid). This is a standard reaction. Acyl chlorides readily react with water to form carboxylic acids.
2. Reaction (2):

This reaction depicts the attempted reduction of benzamide to benzoic acid using lithium aluminum hydride (LiAlH4). This is incorrect. LiAlH4 is a strong reducing agent that reduces amides to amines, not carboxylic acids. The correct product would be benzylamine.

3. Reaction (3):

This reaction shows the oxidation of ethanol to acetic acid using alkaline potassium permanganate (KMnO₄), followed by acidification. This is a standard oxidation reaction.
4. Reaction (4):

This reaction shows the oxidation of propanol to propanoic acid using a mixture of chromium trioxide (CrO₃) and sulfuric acid (H₂SO₄). This is also a standard oxidation reaction.