помогите с химией срочно

I

1) 4Na + O2 = 2Na2O

2) Na2O + H2O = 2NaOH

3) 2NaOH + H2CO3 = Na2CO3 + 2H2O

4)Na2O + H2SO4 = Na2SO4 + H2O

II

1) 2Fe + 3Cl2 = 2FeCl3

2) FeCl3 + 3NaOH = Fe(OH)3 +3NaCl

3) 2Fe(OH)3 + 3MgCl2 = 2FeCl3 + 3Mg(OH)2

4) 2Fe(OH)3 = Fe2O3 + 3H2O

5)Fe2O3 + H2SO4 = Fe2(SO4)3 + H2O