Conversion of Bromobenzene to benzoic acid

Explanation

To convert bromobenzene to benzoic acid, we can follow these steps:

### Step 1: Nucleophilic Substitution
- **Reaction**: Treat bromobenzene with potassium cyanide (KCN).
- **Mechanism**: The cyanide ion (CN⁻) from KCN will perform a nucleophilic substitution, replacing the bromine atom (Br) in bromobenzene.
- **Product**: This reaction will yield phenyl cyanide (also known as benzonitrile).

**Chemical Equation**:
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