Question

Viết PTHH hoàn thành các chuỗi phản ứng sau

1, \(Al\rightarrow Al_2O_3\rightarrow AlCl_3\rightarrow Al\left(OH\right)_3\rightarrow Al_2O_3\rightarrow Al\rightarrow AlCl_3\)

2,\(Fe\rightarrow FeSO_4\rightarrow Fe\left(OH\right)_2\rightarrow FeCl_2\)

3,\(Al\rightarrow AlCl_3\rightarrow Al\left(OH\right)_3\rightarrow Al_2O_3\rightarrow Al_2\left(SO_4\right)_3\rightarrow AlCl_3\rightarrow MgCl_2\)

giúp mk với, mk cảm ơn

Answer 1

1, (1) 4Al+ 3O2--(to)---> 2Al2O3

(2) Al2O3+6HCl---> 2AlCl3+ 3H2O

(3) AlCl3+3NaOH---->Al(OH)3+ 3NaCl

(4) 2Al(OH)3---(t^o)---> Al2O3+ 3H2O

(5)2Al2O3---(t^o+ đpnc)--> 4Al+ 3O2

(6) 2Al+ 3Cl2---> 2AlCl3

2, (1)Fe+ CuSO4-->Cu+ FeSO4

(2) FeSO4+ 2NaOH--> Fe(OH)2+ Na2SO4

(3) Fe(OH)2 +2HCl---> FeCl2+ 2H2O

Bài cuối tự làm nhé!

Answer 2

câu 3

2Al + 3Cl2 --t--> 2AlCl3

AlCl3 + 3NaOH -> 3NaCl + Al(OH)3

2Al(OH)3 -t-> Al2O3 + H2O

Al2O3 + 3H2SO4 -> Al2(SO4)3 + 3H2O

Al2(SO4)3 + 3BaCl2 -> 3BaSO4 + 2AlCl3

2AlCl3 + 3Mg -> 2Al + 3MgCl2

Answer 3

\(\left(1\right)4Al+3O_2\underrightarrow{t^o}2Al_2O_3\\ \left(2\right)Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3\downarrow+3NaCl\\ 2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\\ 2Al_2O_3\underrightarrow{dpnc}4Al+3O_2\\ 2Al+6HCl\rightarrow2AlCl_3+3H_2\)

Answer 4

https://i.imgur.com/tcTizsz.jpg

Answer 5

Answer 6

\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\\ FeSO_4+2NaOH\rightarrow Fe\left(OH\right)_2\downarrow+Na_2SO_4\\ Fe\left(OH\right)_2+2HCl\rightarrow FeCl_2+2H_2O\)

\(2Al+6HCl\rightarrow2AlCl_3+3H_2\\ AlCl_3+3KOH\rightarrow3KCl+Al\left(OH\right)_3\downarrow\\ 2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\\ Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\\ Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\downarrow\\2 AlCl_3+3Mg\rightarrow2Al+3MgCl_2\)