1) 2AgNO₃ + BaCl₂ = Ba(NO₃)₂ + 2AgCl↓
Ag⁺ + Cl⁻ = AgCl
2) Na₂CO₃ + H₂SO₄ = Na₂SO₄ + CO₂↑ + H₂O
2H⁺ + CO₃²⁻ = CO₂ + H₂O
3) Ni(NO₃)₂ + 2NaOH = 2NaNO₃ + Ni(OH)₂↓
Ni²⁺ + 2OH⁻ = Ni(OH)₂
4) K₂SiO₃ + 2HCl = 2KCl + H₂SiO₃↓
2H⁺ + SiO₃²⁻ = H₂SiO₃
5) H₂S + Pb(NO₃)₂ = 2HNO₃ + PbS↓
Pb²⁺ + H₂S = PbS + 2H⁺
6) NH₄Cl + NaOH = NaCl + NH₃↑ + H₂O
NH₄⁺ + OH⁻ = NH₃ + H₂O
7) BaCl₂ + H₂SO₄ = 2HCl + BaSO₄↓
Ba²⁺+ SO₄²⁻ = BaSO₄
8) HgNO₃ + KI = KNO₃ + HgI↓
Hg⁺ + I⁻ = HgI
9) Na₂SO₃ + HNO₃ = 2NaNO₃ + SO₂↑ + H₂O
2H⁺ + SO₃²⁻ = SO₂ + H₂O
10) Ca(NO₃)₂ + 2KF = 2KNO₃ + CaF₂↓
Ca²⁺ + 2F⁻ = CaF₂