$SO_{3}$ + $H_{2}$$O_{}$ → $H_{2}$$SO_{4}$
$H_{2}$$SO_{4}$ + $2NaOH_{}$ → $Na_{2}$$SO_{4}$ + $2H_{2}$$O_{}$
$K_{2}$$O_{}$ + $H_{2}$$O_{}$ → $2KOH_{}$
$Al_{2}$$O_{3}$ + $3H_{2}$$SO_{4}$ → $Al_{2}$$(SO_{4})$$_{3}$ + $3H_{2}$$O_{}$
$Ca(OH)_{2}$ + $Na_{2}$$CO_{3}$ → $CaCO_{3}$ ↓ + $2NaOH_{}$
$Fe_{}$ + $2HCl_{}$ → $FeCl_{2}$ + $H_{2}$ ↑
$Cu(OH)_{2}$ → $CuO_{}$ + $H_{2}$$O_{}$
$Ca(OH)_{2}$ + $2HNO_{3}$ → $Ca(NO_{3})$$_{2}$ + $2H_{2}$$O_{}$
$Mg(OH)_{2}$ + $2HCl_{}$ → $MgCl_{}$ + $2H_{2}$$O_{}$
$2KOH_{123}$ + $H_{2}$$SO_{4}$ → $K_{2}$$SO_{4}$ + $2H_{2}$$O_{}$
$Zn_{}$ + $FeSO_{4}$ → $ZnSO_{4}$ + $Fe_{}$↓
$H_{2}$$SO_{4}$ + $Ba(NO_{3})$$_{2}$ → $BaSO_{4}$ ↓ + $2HNO_{3}$
$NaHCO_{3}$ + $HCL_{}$ → $NaCl_{}$ + $H_{2}$$O_{}$ + $CO_{2}$ ↑
$K_{2}$$CO_{3}$ + $BaCl_{2}$ → $BaCO_{3}$ ↓+ $2KCl_{}$
Nhớ cho mik ctlhn nhé!!!
