1)С₂H₂+H₂=>C₂H₄

2)C₂H₄+H₂=>C₂H₆

3)C₂H₆+HCl=>C₂H₅Cl+H₂

4)2C₂H₅Cl+2Na=>C₄H₁₀+2NaCl

5)С₄H₁₀=>C₄H₈+H₂

6)С₄H₈+H₂O=>C₄H₉OH

7)C4H9OH + CuO ---> C3H7COH + Cu + H2O

8)C3H7COH + CuO → C3H7COOH + Cu↓