Question

Viết pt dãy chuyển đổi hoá học sau AL---> Al2O3---> al2(SO4)3--->Ạl(OH)3-->AlCl3

Answer 1

\(4Al+3O_2\underrightarrow{^{^{t^o}}}2Al_2O_3\)

\(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

\(Al_2\left(SO_4\right)_3+6NaOH\rightarrow2Al\left(OH\right)_3+3Na_2SO_4\)

\(Al\left(OH\right)_3+3HCl\rightarrow AlCl_3+3H_2O\)

Answer 2

\(4Al+3O_2--^{t^o}->2Al_2O_3\)

\(Al_2O_3+3H_2SO_4--->Al_2\left(SO_4\right)_3+3H_2O\)

\(Al_2\left(SO_4\right)_3+3Cu\left(OH\right)_2--->2Al\left(OH\right)_3+3CuSO_4\)

\(Al\left(OH\right)_3+3HCl---->AlCl_3+3H_2O\)