Pb(NO₃)₂ + 2KCl = PbCl₂↓ + 2KNO₃
Pb²⁺ +2NO₃⁻ + 2K⁺ + 2Cl⁻ = PbCl₂↓ + 2K⁺ + 2NO₃⁻
Pb²⁺ + 2Cl⁻ = PbCl₂↓
Pb(NO₃)₂ + Na₂S = 2NaNO₃ + PbS↓
Pb²⁺ + 2NO₃⁻ + 2Na⁺ + S²⁻ = 2Na⁺ + 2NO₃⁻ + PbS↓
Pb²⁺ + S²⁻ = PbS↓
Pb(NO₃)₂ + CuSO₄ = Cu(NO₃)₂ + PbSO₄↓
Pb²⁺ + 2NO₃⁻ + Cu²⁺ + SO₄²⁻ = Cu²⁺ + 2NO₃⁻ + PbSO₄↓
Pb²⁺ + SO₄²⁻ = PbSO₄↓
CuSO₄ + Na₂S = CuS↓ + Na₂SO₄
Cu²⁺ + SO₄²⁻ + 2Na⁺ + S²⁻ = CuS↓ + 2Na⁺ + SO₄²⁻
Cu²⁺+ S²⁻ = CuS↓
Na₂S + KCl ≠
CuSO₄ + KCl ≠
