Carry out the following conversions :
Methyl chloride to acetic acid.

Explanation

To convert methyl chloride (CH3Cl) to acetic acid (CH3COOH), we can follow these steps:

### Step 1: Formation of Alkyl Cyanide
1. **React methyl chloride with alcoholic KCN**:
- Methyl chloride (CH3Cl) reacts with alcoholic potassium cyanide (KCN).
- The cyanide ion (CN⁻) acts as a nucleophile and attacks the carbon atom in methyl chloride, displacing the chloride ion (Cl⁻).
- The reaction produces methyl cyanide (CH3CN).

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