Bạn tham khảo:
$1/$
$CaO+H_2O \to \underbrace{Ca(OH)_2}_{\text{Canxi hiđroxit}}$
$Na_2O+H_2O \to \underbrace{2NaOH}_{\text{Natri hiđroxit}}$
$MgO+H_2O \to X$
$FeO+2HCl \to \underbrace{FeCl_2}_{\text{Sắt (II) Clorua}}+H_2O$
$Fe_2O_3+6HCl \to \underbrace{2FeCl_2}_{\text{Sắt (III) Clorua}}+3H_2O$
$CuO+2HCl \to \underbrace{FeCl_2}_{\text{Đồng(II) Clorua}}+H_2O$
$CaO+CO_2 \to \underbrace{CaCO_3}_{\text{Canxi cacbonat}}$
$CaO+SO_2 \to \underbrace{CaSO_3}_{\text{Canxi sunfit}}$
$Na_2O+CO_2 \to \underbrace{Na_2CO_3}_{\text{Natri cacbonat}}$
$Na_2O+SO_2 \to \underbrace{Na_2SO_3}_{\text{Natri Sunfit}}$
$2/$
$2Al+6HCl \to 2AlCl_3+3H_2$
$n_{Al}=0,2(mol)$
$n_{H_2}=0,3(mol)$
$V_{H_2}=0,3.22,4=6,72(l)$
