Write two chemical tests to distinguish ethyne from ethene

Explanation

To distinguish between ethyne (C₂H₂) and ethene (C₂H₄), we can perform the following two chemical tests:

### Test 1: Ammoniacal Silver Nitrate Test
1. **Procedure**: Bubble ethyne gas through ammoniacal silver nitrate solution (AgNO₃ in ammonia).
2. **Observation**: A yellowish-white precipitate of silver acetylide (Ag₂C₂) will form.
3. **Reaction**: The chemical reaction can be represented as:
\[
C_2H_2 + 2AgNO_3 \rightarrow Ag_2C_2 + 2HNO_3
...