1) Na2SO4+BaCl2=BaSO4↓+2NaCl
2Na+ + SO4(2−) + Ba2+ + 2Cl− = BaSO4↓ + 2Na+ + 2Cl−
Ba2+ + SO4(2−) = BaSO4↓
2) AgNO3 + HCl = AgCl↓ + HNO3
H+ + CL- + Ag+ + NO3- = AgCl + H+ + NO3-
Cl- + Ag+ = AgCl
3) NaOH + HCl = NaCl + H2O
Na+ + OH- + H+ + Cl- = Na+ + Cl- + H2O
OH- + H+ = H2O
1) Na2SO4+BaCl2=BaSO4↓+2NaCl
2Na+ + SO4(2−) + Ba2+ + 2Cl− = BaSO4↓ + 2Na+ + 2Cl−
Ba2+ + SO4(2−) = BaSO4↓
2) AgNO3 + HCl = AgCl↓ + HNO3
H+ + CL- + Ag+ + NO3- = AgCl + H+ + NO3-
Cl- + Ag+ = AgCl
3) NaOH + HCl = NaCl + H2O
Na+ + OH- + H+ + Cl- = Na+ + Cl- + H2O
OH- + H+ = H2O