Conversion of Acetylene into ethanal

Explanation

To convert acetylene (C2H2) into ethanal (acetaldehyde, CH3CHO), we can follow these steps:

### Step 1: Oxymercuration of Acetylene
1. **Reagents**: Use mercuric ion (Hg2+) and dilute sulfuric acid (H2SO4).
2. **Reaction**: Acetylene (C2H2) reacts with mercuric ion in the presence of dilute sulfuric acid to form an intermediate compound. This process involves the addition of a mercuric ion across the triple bond of acetylene, leading to the formation of a vinyl mercurial compound.

\[
\text{C}_2\text{H}_2 + \text{Hg}^{2+} + \text{H}_2\text{SO}_4 \rightarrow \text{Vinyl mercurial compound}
...