а) CaCO3 + 2H2SO4 -> CaSO4 + 2HCOOHCaSO4 + 2C -> CaC2 + 2SO2CaC2 + 2H2O -> C2H2 + Ca(OH)2C2H2 + H2O -> CH3CHOb) CH4 + Br2 -> CH3Br + HBrCH3Br + KOH -> CH2=CH2 + KBr + H2OCH2=CH2 + Cl2 -> CH2=CHCl+ HClCH2=CHCl + nCH2=CHCl -> (-CH2-CHCl-)n + nHCl
а) CaCO3 + 2H2SO4 -> CaSO4 + 2HCOOH
CaSO4 + 2C -> CaC2 + 2SO2
CaC2 + 2H2O -> C2H2 + Ca(OH)2
C2H2 + H2O -> CH3CHO
b) CH4 + Br2 -> CH3Br + HBr
CH3Br + KOH -> CH2=CH2 + KBr + H2O
CH2=CH2 + Cl2 -> CH2=CHCl+ HCl
CH2=CHCl + nCH2=CHCl -> (-CH2-CHCl-)n + nHCl