How will you convert ethyne to benzene?

Explanation

To convert ethyne (acetylene) to benzene, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: We start with ethyne (C₂H₂), which is also known as acetylene. We will need three moles of ethyne for the conversion process.

2. **Set Up the Reaction Conditions**: The reaction requires specific conditions to facilitate the conversion. We will heat the ethyne in a red-hot iron tube. The temperature should be around 873 Kelvin (600°C).

3. **Cyclization Process**: As the ethyne is heated, the molecules undergo a cyclization reaction. This means that the linear ethyne molecules will rearrange and bond with each other to form a cyclic structure.

4. **Formation of Benzene**: The cyclization of three ethyne molecules leads to the formation of benzene (C₆H₆). The reaction can be represented as follows:
\[ 3 \text{C}_2\text{H}_2 \xrightarrow{\text{red-hot iron, 873 K} } \text{C}_6\text{H}_6 \]

5. **Final Product**: The final product of this reaction is benzene, which is a stable aromatic compound.

### Summary Reaction:
\[ 3 \text{C}_2\text{H}_2 \xrightarrow{\text{red-hot iron, 873 K}} \text{C}_6\text{H}_6 \]