Question

Al-->Al2O3-->Al(OH)3--> Al2O3-->AlCl3 Помогите розабрать=(

Answer 1

Al → Al2O3 → Al(OH)3 → Al2O3 → AlCl3
B2O3 + 2Al = Al2O3 + 2B
Al2O3 + 3H2O = 2Al(OH)3
2Al(OH)3 = Al2O3 + 3H2O
Al2O3 + 6HCl(конц., гор.) = 2AlCl3 + 3H2O