How is `CH_(3)OH` converted into CH_(3)COOH` ?

Explanation

To convert methanol (CH₃OH) into ethanoic acid (CH₃COOH), we can follow a series of chemical reactions. Here is a step-by-step breakdown of the process:

### Step 1: Halogenation of Methanol
- **Reaction**: Treat methanol (CH₃OH) with phosphorus pentachloride (PCl₅).
- **Product**: This reaction leads to the formation of methyl chloride (CH₃Cl) through a halogenation process.

### Step 2: Nucleophilic Substitution Reaction
- **Reaction**: The methyl chloride (CH₃Cl) is then treated with alcoholic potassium cyanide (KCN).
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