Question

[thanh1]

thực hiện chuỗi chuyển hoá sau, ghi rõ đkpư nếu có: Al -> Al2O3 -> AlCl3 -> Al(OH)3 -> Al2O3

Answer 1

[Trần Hữu Tuyển]

4Al + 3O₂ \(\underrightarrow{t^o}\) 2Al₂O₃

Al₂O₃ + 6HCl -> 2AlCl₃ + 3H₂O

AlCl₃ + 3NaOH -> Al(OH)₃ + 3NaCl

2Al(OH)₃ \(\underrightarrow{t^o}\) Al₂O₃ + 3H₂O

Answer 2

[Cheewin]

\(2Al+\dfrac{3}{2}O_2\underrightarrow{t^0}Al_2O_3\)

\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)

\(2AlCl_3+3Ba\left(OH\right)_2\rightarrow2Al\left(OH\right)_3\downarrow+3BaCl_2\)

\(2Al\left(OH\right)_3\underrightarrow{t^0}Al_2O_3+3H_2O\)