1.BaCl2+K2CO3=BaCO3↓+2KCl
2.Na2CO3+Ca(OH)2=CaCO3↓+2NaOH
3.Na2CO3+Ca(OH)2=CaCO3↓+2NaOH
4.Na2SO3的话是Na2SO3+2HCl=2NaCl+H2O+SO2↑
Na2SO4的话是Na2SO4+BaCl2=BaSO4↓+2NaCl
1.BaCl2+K2CO3=BaCO3↓+2KCl
2.Na2CO3+Ca(OH)2=CaCO3↓+2NaOH
3.Na2CO3+Ca(OH)2=CaCO3↓+2NaOH
4.Na2SO3的话是Na2SO3+2HCl=2NaCl+H2O+SO2↑
Na2SO4的话是Na2SO4+BaCl2=BaSO4↓+2NaCl