1)Na2S+2HCl=2NaCl+H2S
2)Na3PO4+3AgNO3=Ag3PO4+3NaNO3
3)K2CO3+2HCl=2KCl+CO2+H2O
4)BaCl2+H2SO4=BaSO4+2HCl
1)Na2S+2HCl=2NaCl+H2S
2)Na3PO4+3AgNO3=Ag3PO4+3NaNO3
3)K2CO3+2HCl=2KCl+CO2+H2O
4)BaCl2+H2SO4=BaSO4+2HCl