PT phân tử, PT ion và ion thu gọn (lần lượt cho mỗi phương trình)
1. $H_2SO_4+2KOH\to K_2SO_4+2H_2O$
$2H^++SO_4^{2-}+2K^++OH^-\to 2K^++SO_4^{2-}+2H_2O$
$H^++OH^-\to H_2O$
2. $BaCl_2+2AgNO_3\to 2AgCl+Ba(NO_3)_2$
$Ba^{2+}+2Cl^-+2Ag^++2NO_3^-\to Ba^{2+}+2NO_3^-+2AgCl$
$Ag^++Cl^-\to AgCl$
3. $K_2CO_3+H_2SO_4\to K_2SO_4+CO_2+H_2O$
$2K^++CO_3^{2-}+2H^++SO_4^{2-}\to 2K^++SO_4^{2-}+CO_2+H_2O$
$CO_3^{2-}+2H^+\to CO_2+H_2O$
4. $2NH_4Cl+Ba(OH)_2\to BaCl_2+2NH_3+2H_2O$
$2NH_4^++2Cl^-+Ba^{2+}+2OH^-\to Ba^{2+}+2Cl^-+2NH_3+2H_2O$
$\Rightarrow NH_4^++OH^-\to NH_3+H_2O$
5. $ZnS+2HCl\to ZnCl_2+H_2S$
$ZnS+2H^++2Cl^-\to Zn^{2+}+2Cl^-+H_2S$
$ZnS+2H^+\to Zn^{2+}+H_2S$
