Đáp án:

Giải thích các bước giải:

 `2P + 5O_2 overset(t^o)(->)2 P_2O_5`

Phosphorus pentoxide

`Na_2O + H_2O -> 2NaOH`

Sodium hydroxide

`2Fe +3O_2 overset(t^o)(->) 2Fe_2O_3`

Iron `(III)` oxide

`CO_2 + H_2O -> H_2CO_3`

Carbonic acid

`Cu + AgNO_3 -> Cu(NO_3)_2 + Ag`

`Cu(NO_3)_2 : ` Copper (II) nitrate

`Ag : ` Silver

`Fe + 2HCl -> FeCl_2 + H_2`

`FeCl_2 : ` Iron `(II)` chloride

`H_2 : `Hydrogen

 $\rm 4P +5O_2 \xrightarrow{to} 2P_2O_5$

sp: $\rm P_2O_5:$ phosphor pentaoxide

$\rm Na_2O +H_2O \xrightarrow{} 2NaOH$

sp :$\rm NaOH$ sodium hydroxide 

$\rm 4Fe +3O_2 \xrightarrow{to} 2Fe_2O_3$

sp: $\rm Fe_2O_3$ iron(III) oxide

$\rm CO_2 +H_2O \rightleftharpoons H_2CO_3$ 

sp: $\rm H_2CO_3$ Acid carbonic

$\rm Cu +2AgNO_3 \xrightarrow{} Cu(NO_3)_2 +2Ag$

sp :$\rm Cu(NO_3)_2 $ copper(II) nitrate

     $\rm Ag:$ silver

$\rm Fe +2HCl \xrightarrow{} FeCl_2 +H_2$ 

sp: $\rm FeCl_2 :$ iron (II) chloride 

      $\rm H_2$ hydrogen