Question

Identify the product formed in the following reaction: $(CH_3CO)_2O \xrightarrow{H_2O} \text{Product}$

• A. $CH_3COCH_3$
• B. $CH_3 - CHO$
• C. $CH_3 - OH$
• D. $CH_3COOH$

Hint:

Any acid derivative (anhydrides, acyl chlorides, esters, and amides) will always ultimately yield its parent carboxylic acid upon complete hydrolysis.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Acid anhydrides are derivatives of carboxylic acids. When they react with water (hydrolysis), they revert back to their parent carboxylic acids.

Step 2: Formula Application:
$(RCO)_2O + H_2O \rightarrow 2RCOOH$.

Step 3: Explanation:
Acetic anhydride ($(CH_3CO)_2O$) reacts with one molecule of water. The bond between the carbonyl carbon and the central oxygen breaks, and the elements of water ($H$ and $OH$) are added to form two molecules of acetic acid ($CH_3COOH$).

Step 4: Final Answer:
The product formed is $CH_3COOH$.