Автор - oshibkapokoleniya
C2H5OH->C2H4O->CH3COOH->CH3COONa->CH4->C2H2->H2O
1) C2H5OH+CuO = C2H4O+Cu+H2O
2)C2H4O+2Cu(OH)2->CH3COOH+Cu2O+2H2O
3)CH3COOH + NaOH = CH3COONa + H2O
4)CH3COONa + NaOH = CH4 + Na2CO3
5) 2 CH4 = C2H2+3 H2
6) Ca(OH)2+C2H2 = CaC2+2 H2O