Question:
Identify the product when ethylbenzene reacts with dilute nitric acid.
Identify the product when ethylbenzene reacts with dilute nitric acid.
Show Hint
Nitric acid acts here as an oxidising agent that attacks the alkyl side chain of ethylbenzene.
Updated On: Nov 13, 2026
- o-Nitroethylbenzene
- p-Nitroethylbenzene
- Ethoxybenzene
- Benzic acid
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Alkyl groups on a benzene ring have a benzylic carbon, which can be oxidised to a carboxyl group.
Step 2: Reaction
Ethylbenzene is oxidised at the side chain.
\(\text{C}_6\text{H}_5\text{CH}_2\text{CH}_3\xrightarrow{[O]}\text{C}_6\text{H}_5\text{COOH}\)
Step 3: Compare the options
The product is benzoic acid, written as 'Benzic acid' in the options. This is the fourth option.
Final Answer:
The product is benzoic acid. \[ \boxed{\text{(D) }\text{Benzic acid}} \]
Alkyl groups on a benzene ring have a benzylic carbon, which can be oxidised to a carboxyl group.
Step 2: Reaction
Ethylbenzene is oxidised at the side chain.
\(\text{C}_6\text{H}_5\text{CH}_2\text{CH}_3\xrightarrow{[O]}\text{C}_6\text{H}_5\text{COOH}\)
Step 3: Compare the options
The product is benzoic acid, written as 'Benzic acid' in the options. This is the fourth option.
Final Answer:
The product is benzoic acid. \[ \boxed{\text{(D) }\text{Benzic acid}} \]
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