Conversion of Acetylene into 1, 1-dichloroethane

Explanation

To convert acetylene (C2H2) into 1,1-dichloroethane (C2H4Cl2), we can follow these steps:

### Step 1: Convert Acetylene to Ethylene
- **Reaction**: Acetylene (C2H2) is treated with hydrogen chloride (HCl).
- **Equation**:
\[ \text{C}_2\text{H}_2 + \text{HCl} \rightarrow \text{C}_2\text{H}_4 + \text{HCl} \]
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