(1)4HCl(浓)+MnO 2
MnCl 2+Cl 2↑+2H 2O
(2)饱和食盐水(或饱和氯化钠溶液)
(3)①HCO 3 -+Ba 2++OH -=BaCO 3↓+H 2O;NaHCO 3;②NaCl
(4)2Cl 2+2Na 2CO 3+H 2O=2NaHCO 3+2NaCl+Cl 2O↑
(1)4HCl(浓)+MnO 2
MnCl 2+Cl 2↑+2H 2O
(2)饱和食盐水(或饱和氯化钠溶液)
(3)①HCO 3 -+Ba 2++OH -=BaCO 3↓+H 2O;NaHCO 3;②NaCl
(4)2Cl 2+2Na 2CO 3+H 2O=2NaHCO 3+2NaCl+Cl 2O↑