NiCl₂ + H₂S = NiS↓ + 2HCI
Ni²⁺ + 2Cl⁻ + 2H⁺ + S²⁻ = NiS↓ + 2H⁺ + 2CI⁻
Ni²⁺ + S²⁻ = NiS↓
K₂O + 2HNO₃ = 2KNO₃ + H₂O
K₂O + 2H⁺ + 2NO₃⁻ = 2K⁺ + 2NO₃⁻ + H₂O
K₂O + 2H⁺ = 2K⁺ + H₂O
2Fe(OH)₃ + 3H₂SO₄ = Fe₂(SO₄)₃ + 6H₂O
2Fe³⁺ + 6OH⁻ + 6H⁺ + 3SO₄²⁻ = 2Fe³⁺ + 3SO₄²⁻ + H₂O
6OH⁻ + 6H⁺ = 6H₂O
Pb(NO₃)₂ +2 NaI = PbI₂↓ + 2NaNO₃
Pb²⁺ + 2NO₃⁻ + 2Na⁺ + 2I⁻ = PbI₂↓ + 2Na⁺ + 2NO₃⁻
Pb²⁺ + 2I⁻ = PbI₂↓
NiCl₂ + H₂S = NiS↓ + 2HCI
Ni²⁺ + 2Cl⁻ + 2H⁺ + S²⁻ = NiS↓ + 2H⁺ + 2CI⁻
Ni²⁺ + S²⁻ = NiS↓
K₂O + 2HNO₃ = 2KNO₃ + H₂O
K₂O + 2H⁺ + 2NO₃⁻ = 2K⁺ + 2NO₃⁻ + H₂O
K₂O + 2H⁺ = 2K⁺ + H₂O
2Fe(OH)₃ + 3H₂SO₄ = Fe₂(SO₄)₃ + 6H₂O
2Fe³⁺ + 6OH⁻ + 6H⁺ + 3SO₄²⁻ = 2Fe³⁺ + 3SO₄²⁻ + H₂O
6OH⁻ + 6H⁺ = 6H₂O
Pb(NO₃)₂ +2 NaI = PbI₂↓ + 2NaNO₃
Pb²⁺ + 2NO₃⁻ + 2Na⁺ + 2I⁻ = PbI₂↓ + 2Na⁺ + 2NO₃⁻
Pb²⁺ + 2I⁻ = PbI₂↓