C4H10(t) =C2H6+C2H4
C2H6+2Cl2=C2H4Cl2+2HCl
C2H4Cl2+2KOH(спирт.) = C2H2+2KCl+2H2O
HC=-CH+ [Ag(NH3)2]OH= AgC=-CH + 2NH3+H2O
