<span>HCI + AgNO3 - HNO3+AgCl
H+ +Cl- +Ag+NO3- = H+ + NO3- + AgCl
Ag+ +Cl-=AgCl</span>
CaCO₃ + H₂SO₄ --> CaSO₄ + H₂O + CO₂
CaCO₃↓ + 2H⁺ + SO₄²⁻ --> Ca²⁺ + SO₄²⁻ + H₂O + CO₂↑
CaCO₃↓ + 2H⁺ --> Ca²⁺ + H₂O + CO₂↑
BaCl₂ + H₂SO₄ --> BaSO₄ + 2HCl
Ba²⁺ + 2Cl⁻ + 2H⁺ + SO₄²⁻ --> BaSO₄↓ + 2H⁺ + 2Cl⁻
Ba² ⁺ SO₄²⁻ --> BaSO₄↓
CH3COONa<span> + HCl = </span>CH3COOH<span> + NaCl
</span>MgO + CH3COOH = (CH3<span>COO)2Mg + H2O</span>