Question

AI-AI2O3-AICI3-AI(OH)3-AI2O3

Answer 1

1)4Al+3O2=2Al2O3

2)AL2O3+6HCl=2AlCl3+3H20

3)AlCl3+3NaOH=Al(OH)3+3NaCl

4)Al(OH)3-t->Al2O3+H2O

t-сжигания или подогрев

Answer 2

1. 4Al + 3O2 = 2Al2O3

2. Al2O3 + 6HCl = 2AlCl3 + 3H2O

3. AlCl3 + 3NaOH = 3NaCl + Al(OH)3

4.                     t

        2Al(OH)3 = Al2O3 + 3H2O