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Statement-1: When PhCHO is made to reac...

Statement-1: When PhCHO is made to react in `D_(2)O`, deuterium in incorporated in product in Cannizzaro reaction.
and
Statement-2: In cannizzaro reaction transfer of hydride takes place from one molecule to other.

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 analyze the statements given in the question, we will evaluate each statement separately and determine their validity based on the principles of the Cannizzaro reaction. ### Step-by-Step Solution: **Step 1: Understand the Cannizzaro Reaction** - The Cannizzaro reaction occurs with aldehydes that do not have alpha-hydrogens. In this reaction, one molecule of the aldehyde is oxidized to a carboxylic acid, while another molecule is reduced to an alcohol. **Step 2: Analyze Statement 1** - Statement 1 claims: "When PhCHO (benzaldehyde) is made to react in D₂O, deuterium is incorporated in the product in the Cannizzaro reaction." - Benzaldehyde (PhCHO) does not have any alpha-hydrogens, which means it can undergo the Cannizzaro reaction. However, in the Cannizzaro reaction, the hydride transfer occurs between two molecules of benzaldehyde, and the incorporation of deuterium (D) from D₂O does not happen in the product. Therefore, this statement is **false**. **Step 3: Analyze Statement 2** - Statement 2 claims: "In the Cannizzaro reaction, transfer of hydride takes place from one molecule to another." - This statement is true because, during the Cannizzaro reaction, one molecule of the aldehyde donates a hydride ion (H⁻) to another molecule, resulting in the formation of a carboxylic acid and an alcohol. Therefore, this statement is **true**. **Step 4: Conclusion** - Based on the analysis, we conclude that: - Statement 1 is false. - Statement 2 is true. Thus, the answer is **D** (Statement 1 is false, Statement 2 is true).
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