1)C₂Н₂+Н₂О => СН₃СОН
2)CH₃COH + H₂ => C₂H₅OH
3)C₂H₅OH + CuO => CH₃CHO + Cu + H₂O
4)CH₃CHO + Ag₂O => CH₃COOH + 2Ag
5) из 2 частей:
1)CH₃COOH + NaOH => CH₃COONa + H₂O
2)CH₃COONa + NaOH => CH₄ + Na₂CO₃
