Oxidation of cyclopentanol to cyclopentanone can be accomplished by using

Options

A. Tollen's reagent
B. chromic acid
C. bromine water
D. Fehling's solution

Answer

To determine the correct reagent for the oxidation of cyclopentanol to cyclopentanone, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants and Products**:
- The reactant is cyclopentanol, which has the structure of cyclopentane with a hydroxyl group (-OH) attached.
- The product is cyclopentanone, which is a ketone derived from cyclopentanol.

2. **Understand the Reaction Type**:
- The transformation from cyclopentanol to cyclopentanone is an oxidation reaction. This means that the hydroxyl group (-OH) in cyclopentanol will be converted to a carbonyl group (C=O) in cyclopentanone.

3. **Evaluate the Given Options**:
- The options provided are various reagents that could potentially be used for this oxidation process.
- We need to analyze each option to see which one is suitable for oxidizing alcohols to ketones.

4. **Analyze Each Option**:
- **Option A: Toluene reagent** - This reagent is typically used to oxidize aldehydes and ketones into their respective acids, not for oxidizing alcohols. Therefore, this option is incorrect.
- **Option B: Bromine water** - This reagent is used to test for unsaturation (double bonds) in organic compounds and does not oxidize alcohols to ketones. Thus, this option is also incorrect.
- **Option C: Chromic acid (H2CrO4)** - Chromic acid is a strong oxidizing agent that can effectively oxidize alcohols to ketones. Therefore, this option is correct.

5. **Conclusion**:
- The correct reagent for the oxidation of cyclopentanol to cyclopentanone is **chromic acid (H2CrO4)**.

### Final Answer:
The oxidation of cyclopentanol to cyclopentanone can be accomplished by using **chromic acid (H2CrO4)**.

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