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Assertion: Salicyclic acid is much strog...

Assertion: Salicyclic acid is much strogest than its `m-p`-isomers
and benzoic acid itself.
Reason: It is due to steric inhibitation to resonance, as `-OH` group forces `-COOH` out of the plane of ring.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-2

B

Statement-1 is True, Statement-2 is True, Statement-2 is
NOT a correct explanation for Statement-2

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion-reason question regarding salicylic acid, we will analyze both the assertion and the reason step by step. ### Step 1: Understand the Assertion The assertion states that salicylic acid is much stronger than its meta and para isomers and benzoic acid itself. - **Salicylic Acid**: It is ortho-hydroxybenzoic acid, which has both a hydroxyl (-OH) group and a carboxylic acid (-COOH) group attached to the benzene ring. - **Meta and Para Isomers**: The meta isomer has the -OH group at the meta position relative to the -COOH group, while the para isomer has the -OH group at the para position. ### Step 2: Analyze the Strength of Salicylic Acid Salicylic acid is stronger than its isomers due to the following reasons: - The ortho position allows for intramolecular hydrogen bonding between the -OH and -COOH groups, which stabilizes the molecule. - This intramolecular hydrogen bonding increases the acidity of salicylic acid compared to its meta and para isomers, which do not have this stabilizing interaction. ### Step 3: Understand the Reason The reason given states that the strength of salicylic acid is due to steric inhibition to resonance, as the -OH group forces the -COOH group out of the plane of the ring. - **Steric Inhibition to Resonance**: This term generally refers to the idea that bulky groups can hinder the resonance stabilization of a molecule. - However, in the case of salicylic acid, the -OH group does not force the -COOH group out of the plane in a way that diminishes resonance. Instead, it promotes intramolecular hydrogen bonding, which is a different concept. ### Step 4: Conclusion - The assertion is **true** because salicylic acid is indeed stronger than its meta and para isomers and benzoic acid. - The reason is **false** because the strength of salicylic acid is not primarily due to steric inhibition to resonance, but rather due to the stabilizing effect of intramolecular hydrogen bonding. ### Final Answer - Assertion: True - Reason: False

To solve the assertion-reason question regarding salicylic acid, we will analyze both the assertion and the reason step by step. ### Step 1: Understand the Assertion The assertion states that salicylic acid is much stronger than its meta and para isomers and benzoic acid itself. - **Salicylic Acid**: It is ortho-hydroxybenzoic acid, which has both a hydroxyl (-OH) group and a carboxylic acid (-COOH) group attached to the benzene ring. - **Meta and Para Isomers**: The meta isomer has the -OH group at the meta position relative to the -COOH group, while the para isomer has the -OH group at the para position. ...
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