Sulphur monochloride reacts with ethene to form

Options

A. mustard gas
B. saccharine
C. lewisite
D. None of these

Explanation

To solve the question regarding the reaction of sulfur monochloride with ethene, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactants in this reaction are sulfur monochloride (S2Cl2) and ethene (C2H4).

2. **Understand the Reaction**: Sulfur monochloride reacts with ethene in a specific manner. The reaction involves multiple molecules of sulfur monochloride and ethene.

3. **Write the Balanced Reaction**: The balanced chemical equation for the reaction is:
\[ 8 \text{S}_2\text{Cl}_2 + 16 \text{C}_2\text{H}_4 \rightarrow 8 \text{ClCH}_2\text{CH}_2\text{CH}_2\text{S} + \text{S} \]
This shows that 8 molecules of sulfur monochloride react with 16 molecules of ethene to produce a compound.

4. **Identify the Product**: The product formed in this reaction is mustard gas, also known as bis(2-chloroethyl) sulfide.

5. **Name the Process**: The process through which mustard gas is synthesized from sulfur monochloride and ethene is known as the Levinstein process.

6. **Conclusion**: Therefore, the product formed when sulfur monochloride reacts with ethene is mustard gas.

### Final Answer:
The reaction of sulfur monochloride with ethene produces mustard gas.

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