Write a test to differentiate between pentan-2-one and pentan-3-one.

Explanation

To differentiate between pentan-2-one and pentan-3-one, we can use the iodoform test, which is specifically useful for identifying methyl ketones. Here’s a step-by-step solution:

### Step 1: Understand the Structures
- **Pentan-2-one** has the structure:
\[ CH_3-CH_2-CO-CH_2-CH_3 \]
The ketone group (C=O) is on the second carbon, and it has a methyl group (CH₃) adjacent to the carbonyl carbon.
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