Помогите пожалуйста решить
CH3OH+HBr-->CH3Br+H2O CH3Br+BrCH3-(2Na)->CH3CH3+2NaBr СH3CH3-(t,Ni)->CH2CH2+H2 CH2CH2+H2O-->CH3CH2OH CH3CH2OH+3O2-->2CO2+3H2O CH3CH2OH+HCOOH-->HCOOCH2CH3+H2O