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`2Na+Cl_2` $\xrightarrow[]{t^o}$ `2NaCl`

`3Fe+2O_2` $\xrightarrow[]{t^o}$ `Fe_3O_4`

`Zn+2HCl->ZnCl_2+H_2`

`3NaOH+FeCl_3->Fe(OH)_3+3NaCl`

`2K+2H_2O->2KOH+H_2`

`2Fe(OH)_3` $\xrightarrow[]{t^o}$ `Fe_2O_3+3H_2O`

`Fe_2O_3+3CO` $\xrightarrow[]{t^o}$ `2Fe+3CO_2`

`NaOH+HCl->NaCl+H_2O`

`2Al+3H_2SO_4->Al_2(SO_4)_3+3H_2`

`Ca(OH)_2+CO_2->CaCO_3+H_2O`

Giải thích các bước giải:

`1.2Na + Cl_2 overset(t^o)(->) 2NaCl`

`2.3Fe+2O_2 overset(t^o)(->)Fe_3O_4`

`3.Zn+2HCl->ZnCl_2 + H_2`

`4.3NaOH+FeCl_3->Fe(OH)_3+3NaCl`

`5.2K+2H_2O->2KOH+H_2`

`6.2Fe(OH)_3 overset(t^o)(->) Fe_2O_3 + 3H_2O`

`7. Fe_2O_3 + 3CO overset(t^o)(->) 2Fe + 3CO_2`

`8.NaOH+HCl->NaCl + H_2O`

`9.2Al+3H_2SO_4->Al_2(SO_4)_3 + 3H_2`

`10.Ca(OH)_2+CO_2->CaCO_3+H_2O`