Напишите пожалуйста уравнения реакции:
Al2O3-->Al-->AlCl3-->Al(OH)3-->NaAlO2-->Al2(SO4)3
1) Al2O3 + 3H2 = 2Al + 3H2O
2) 2Al + 6HCl = 2AlCl3 + 3H2
3) AlCl3 +3 KOH = Al(OH)3 + 3KCl
4) Al(OH)3+NaOH=>NaAlO2+2H2O
5) 2 NaAlO2 + 4 H2SO4 = Na2SO4 + Al2(SO4)3 + H2O.
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Answers & Comments
1) Al2O3 + 3H2 = 2Al + 3H2O
2) 2Al + 6HCl = 2AlCl3 + 3H2
3) AlCl3 +3 KOH = Al(OH)3 + 3KCl
4) Al(OH)3+NaOH=>NaAlO2+2H2O
5) 2 NaAlO2 + 4 H2SO4 = Na2SO4 + Al2(SO4)3 + H2O.