CuCO₃ + 2HCl = CuCl₂ + CO₂ + H₂O
CuCO₃ + 2H⁺ + 2Cl⁻ = Cu²⁺ + 2Cl⁻ + CO₂ + H₂O
CuCO₃ + 2H⁺ = Cu²⁺ + CO₂ + H₂O
CuCl₂ + 2KOH = Cu(OH)₂ + 2KCl
Cu²⁺ + 2Cl⁻ + 2K⁺ + 2OH⁻ = Cu(OH)₂ + 2K⁺ + 2Cl⁻
Cu²⁺ + 2OH⁻ = Cu(OH)₂
Cu(OH)₂ + H₂SO₄ = CuSO₄ + 2H₂O
Cu(OH)₂ + 2H⁺ + SO₄²⁻ = Cu²⁺ + SO₄²⁻ + 2H₂O
Cu(OH)₂ + 2H⁺ = Cu²⁺ + 2H₂O