Ca(NO3)2+Na2CO3 = СaCO3↓ + 2NaNO3
Ca²⁺ + 2NO₃⁻ + 2Na⁺ + CO₃²⁻ = CaCO₃↓ + 2Na⁺ + 2NO₃⁻
Ca²⁺ + CO₃²⁻ = CaCO₃↓
3Na2O+2H3PO4 = 2Na3PO4 + 3H2O
3Na₂O + 6H⁺ + 2PO₄³⁻ = 6Na⁺ + 2PO₄³⁻ + 3H₂O
3Na₂O + 6H⁺ = 6Na⁺ + 3H₂O
K2SO4+BaSO4 ≠
CuSO4+Fe = FeSO4 + Cu↓
Cu²⁺ + SO₄²⁻ + Fe = Fe²⁺ + SO₄²⁻ + Cu↓
Cu²⁺ + Fe = Fe²⁺ + Cu↓
SO2+2NaOH = Na2SO3 + H2O
SO₂ + 2Na⁺ + 2OH⁻ = 2Na⁺ + SO₃⁻ + H₂O
SO₂ + 2OH⁻ = SO₃²⁻ + H₂O
2HNO3+Fe(OH)
2 = Fe(NO3)2 + 2H2O
2H⁺ + 2NO₃⁻ + Fe(OH)₂ = Fe²⁺ + 2NO₃⁻ + 2H₂O
2H⁺ + Fe(OH)₂ = Fe²⁺ + 2H₂O
HCl+KOH = KCl + H2O
H⁺ + Cl⁻ + K⁺ + OH⁻ = K⁺ + Cl⁻ + H₂O
H⁺ + OH⁻ = H₂O
FeSO4+Ca3(PO4)2
≠
6HNO3+Al2O3 = 2Al(NO3)3 + 3H2O
6H⁺ + 6NO₃⁻ + Al₂O₃ = 2Al³⁺ + 6NO₃⁻ + 3H₂O
6H⁺ + Al₂O₃ = 2Al³⁺ + 3H₂O
MgSO4+Na2CO3 = MgCO3↓ + Na2SO4
Mg²⁺ + SO₄²⁻ + 2Na⁺ + CO₃²⁻ = MgCO₃↓ + 2Na⁺ + SO₄²⁻
Mg²⁺ + CO₃²⁻ = MgCO₃↓