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Statement 1: Acrylic acid (CH(2)=CHCOOH)...

Statement 1: Acrylic acid `(CH_(2)=CHCOOH)` is a weaker acid than benzoic acid `(C_(6)H_(5)COOH)`.
Statement 2: Ethylenic double bond is less electron-donating than benzene ring.

A

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

B

Statement-1 is true, statement-2 is true, statement-2 is not a correct explanation for statement-1

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 analyze the statements regarding the acidity of acrylic acid and benzoic acid, we will break down the reasoning step by step. ### Step-by-Step Solution: 1. **Understanding the Acidity of Carboxylic Acids**: - Carboxylic acids are characterized by the presence of the carboxyl group (-COOH). The acidity of these compounds can be compared based on the stability of their conjugate bases after deprotonation. 2. **Analyzing Acrylic Acid**: - Acrylic acid has the structure CH₂=CHCOOH. When it donates a proton (H⁺), it forms the conjugate base CH₂=CHCOO⁻. - The negative charge on the conjugate base is localized primarily on the carboxylate group and does not have significant resonance stabilization. 3. **Analyzing Benzoic Acid**: - Benzoic acid has the structure C₆H₅COOH. Upon deprotonation, it forms the conjugate base C₆H₅COO⁻. - The negative charge on the benzoate ion (C₆H₅COO⁻) can be delocalized over the benzene ring through resonance. This resonance stabilization makes the benzoate ion more stable than the conjugate base of acrylic acid. 4. **Comparison of Acidity**: - Since the conjugate base of benzoic acid is more stable due to resonance, benzoic acid is a stronger acid than acrylic acid. Therefore, Statement 1 is true: Acrylic acid is indeed a weaker acid than benzoic acid. 5. **Analyzing Statement 2**: - Statement 2 claims that the ethylenic double bond (in acrylic acid) is less electron-donating than the benzene ring. - The ethylenic double bond (C=C) can provide some electron density, but it is not as effective as the resonance stabilization provided by the benzene ring. - The benzene ring is highly stable and can delocalize electrons effectively, making it a stronger electron-donating group compared to the ethylenic double bond. 6. **Conclusion on Statement 2**: - Therefore, Statement 2 is false: the ethylenic double bond is indeed less electron-donating than the benzene ring. ### Final Answer: - Statement 1 is true, and Statement 2 is false.

To analyze the statements regarding the acidity of acrylic acid and benzoic acid, we will break down the reasoning step by step. ### Step-by-Step Solution: 1. **Understanding the Acidity of Carboxylic Acids**: - Carboxylic acids are characterized by the presence of the carboxyl group (-COOH). The acidity of these compounds can be compared based on the stability of their conjugate bases after deprotonation. 2. **Analyzing Acrylic Acid**: ...
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