Benzoic ethanoic anhydride on hydrolysis gives _______a)benzoic acid and methanoic acidb)benzoic acid and ethanoic acidc)phenylethanoic acid and methanoic acidd)no productsCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Hydrolysis of Benzoic Ethanoic Anhydride

Benzoic ethanoic anhydride, also known as ethyl benzoate, is a compound that can undergo hydrolysis in the presence of water. Hydrolysis is a chemical reaction that involves the breaking of a compound by the addition of water molecules. In the case of benzoic ethanoic anhydride, hydrolysis leads to the formation of two products.

Formation of Benzoic Acid
Upon hydrolysis, one of the products formed is benzoic acid. This can be explained by the reaction between the anhydride and water. The water molecule adds to the carbonyl carbon of the anhydride, resulting in the formation of a tetrahedral intermediate. This intermediate then decomposes, leading to the formation of benzoic acid.

Formation of Ethanoic Acid
The other product formed during the hydrolysis of benzoic ethanoic anhydride is ethanoic acid. This can be explained by the reaction between the anhydride and water. The water molecule adds to the carbonyl carbon of the anhydride, resulting in the formation of a tetrahedral intermediate. This intermediate then decomposes, leading to the formation of ethanoic acid.

Overall Reaction
The overall reaction can be represented as follows:
Benzoic Ethanoic Anhydride + H2O → Benzoic Acid + Ethanoic Acid

Conclusion
Upon hydrolysis, benzoic ethanoic anhydride yields benzoic acid and ethanoic acid as the products. This is because the reaction between the anhydride and water leads to the formation of a tetrahedral intermediate, which then decomposes to form the respective carboxylic acids.

Answer

Benzoic ethanoic anhydride (C₆H₅COOCOCH₃) is easily hydrolysed with water to give its corresponding acids, benzoic acid (by adding H to C₆H₅COO) and ethanoic acid (by adding OH to COCH₃).

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