1. 2H2 + O2 = 2H2O
2. 2H2O → 2H2 + O2
2H2 + C2H2 → C2H4
C2H4 + O2 → CH3CHO
3. CH3CHO + Ag2O + NH3 → CH3COONH4 + 2Ag↓
4. CH3COONH4 → CH3COOH + NH3↑
5. 2CH3COOH + 2LiAlH4 → HOCH2CH2OH + 2CH3COOLi + 2H2↑
6. HO-CH2-CH2-OH + CuO (+ t)→ CH3-CH3 + Cu + 2H2O
7. CH3-CH3 + 6[Ag(NH3)2]OH → CH3COONH4 + 6Ag + 11NH3 + 4H2O