Đáp án:
CaCO3 -> CaO + CO2
CaO + 3C -t0-> CaC2 + CO
CaC2 + 2H2O -> C2H2 + Ca(OH)2
2CH4 -1500 độ C-> C2H2 + 3H2
C2H2 + H2 -Pd/PbCO3,t0-> C2H4
C2H4 -t0,P,xt-> PE
C2H2 + HCl -> CH2=CHCl
CH2=CHCl -t0,P,xt-> PVC
2C2H2 -t0,xt-> CH nối ba-C-CH=CH2
CH nối ba-C-CH=CH2 + H2 -Pd/PbCO3,t0-> CH2=CH-CH=CH2
CH2=CH-CH=CH2 -t0,P,xt-> cao su Buna
CH4 + O2 -t0,xt-> HCHO + H2O
C2H2 + H2O -HgSO4,80 độ C-> CH3CHO
CH3CHO + 1/2 O2 -Mn^2+-> CH3COOH
3C2H2 -C,600 độ C-> C6H6
C6H6 + Br2 -Fe-> C6H5Br + HBr
C6H5Br + NaOH -> C6H5OH + NaBr
C2H4 + Br2 -> C2H4Br2
C2H4 + H2O -H+,t0-> C2H5OH
