Give a chemical test to distinguish between `1,2-`dibromopropane and `1,3-` dibromopropane.

Explanation

To distinguish between `1,2-Dibromopropane` and `1,3-Dibromopropane`, we can use a chemical test involving sodium iodide (NaI) in acetone. Here’s a step-by-step solution:

### Step 1: Understand the Structures
- **1,2-Dibromopropane** has bromine atoms on the first and second carbon atoms of the propane chain.
- **1,3-Dibromopropane** has bromine atoms on the first and third carbon atoms.

### Step 2: Set Up the Reaction
- Prepare a reaction mixture with **NaI** (sodium iodide) in **acetone**. Acetone is a polar aprotic solvent that facilitates nucleophilic substitution reactions.
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