Which of the following compound does not...

Which of the following compound does not react with Tollen's reagent?

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To determine which compound does not react with Tollens' reagent, we first need to understand the properties of Tollens' reagent and how it interacts with different types of organic compounds. ### Step-by-Step Solution: 1. **Identify Tollens' Reagent**: Tollens' reagent is a solution of ammoniacal silver nitrate, which can be represented as Ag(NH3)2OH. It is used primarily to test for aldehydes. **Hint**: Remember that Tollens' reagent is specifically used to identify aldehydes due to their ability to reduce silver ions to metallic silver. 2. **Understand the Reactivity**: - **Aldehydes**: Aldehydes (RCHO) react with Tollens' reagent, resulting in the formation of a silver mirror due to the reduction of Ag+ ions to metallic silver. - **Ketones**: Ketones (RC(=O)R') generally do not react with Tollens' reagent because they lack the hydrogen atom attached to the carbonyl carbon that is necessary for the reduction reaction. **Hint**: Recall that the presence of a hydrogen atom directly bonded to the carbonyl carbon is crucial for a compound to react with Tollens' reagent. 3. **Analyze the Given Compounds**: - **Compound A**: If it contains an aldehyde functional group (C=O with H), it will react with Tollens' reagent. - **Compound B**: If it contains a ketone functional group (C=O with R and R'), it will not react with Tollens' reagent. - **Compound C**: If it also contains an aldehyde functional group, it will react with Tollens' reagent. **Hint**: Look for the functional groups in each compound. Aldehydes will react, while ketones will not. 4. **Determine the Correct Answer**: Based on the analysis: - If Compound A and Compound C are aldehydes, they will react with Tollens' reagent. - If Compound B is a ketone, it will not react with Tollens' reagent. Therefore, the compound that does not react with Tollens' reagent is **Compound B** (the ketone). ### Final Answer: **Option B** does not react with Tollens' reagent.