Question

Cân bằng PTHH:

\(Fe+HCl\rightarrow FeCl_2+H_2\)

\(Na+HCl\rightarrow NaCl+H_2\)

\(Al+HCl\rightarrow AlCl_3+H_2\)

\(Al\left(OH\right)_3+H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+H_2O\)

Answer 1

`Fe + 2HCl -> FeCl_2 + H_2`

`2Na + 2HCl -> 2NaCl + H_2`

`2Al + 6HCl -> 2AlCl_3 + 3H_2`

`2Al(OH)_3 + 3H_2SO_4 -> Al_2(SO_4)_3 + 6H_2O`

Answer 2

Fe + 2HCl → FeCl₂ + H₂
2Na + 2HCl → 2NaCl + H₂
2Al + 6HCl → 2AlCl₃ + 3H₂
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 6H₂O

Answer 3

\(Fe+2HCl\rightarrow FeCl_2+H_2\)

\(2Na+2HCl\rightarrow2NaCl+H_2\)

\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)

\(2Al\left(OH\right)_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+6H_2O\)