C2H4->C2H5Br->C2H5Oh->CH3-C=O | | C2H6 H

Первая 1) CaC2+2H2O=Ca (OH) 2+C2H2 2) C2H2+H2O=CH3CHO CH3CHO+H2=CH3CH2OH 3) CH3CH2OH+CuO=CH3CHO+Cu+H2O СH3CHO+Ag2O=CH3COOH+2Ag вторая 1) С +2H2=CH4 2) CH4+CL2=CH3CL+HCL 3) 2CH3CL+2Na=C2H6+2NaCL C2H6=C2H4+H2 третья 1) С2H4+HBr=C2H5Br 2) C2H5Br+NaOH=C2H5OH+NaBr 3) C2H5OH+CH3COOH=CH3COOC2H5 четвертая 1) CH3COOH+H2=CH3CHO+H2O 2) СH3CHO+Ag2O=CH3COOH+2Ag 3) CH3COOH+NaOH=CH3COONa+H2O пятая 1) C2H2+H2O=CH3CHO 2) CH3CHO+Ag2O=CH3COOH+2Ag 3) CH3COOH+C3H7OH=CH3COOC3H7+H2O