C2H6 + Cl2 --- C2H5Cl + HCl
C2H5Cl --- C2H4 + HCl
C2H4 + H2O --- C2H5OH
2C2H5OH --- H2C=CH–CH=CH2 + 2H2
H2C=CH–CH=CH2 --- (–CH2–CH=CH–CH2–)n
Ответ:
1_ Mg + H2O = Mg(OH)2 + H2
2_ H₂SO₄ + 2NaOH = Na₂SO₄ + 2H₂O
3_ 2Cu(OH)2=Cu2+2H2O
4_ NaOH+H2SO4=Na2SO4+H2O
5_ O2 + Mg = MgO
6_ CO₂ + 2NaOH = Na₂CO₃ + H₂O
7_ P2O5+H2O=H3PO4
Объяснение: