Докончите

1) Na2CO3 + HCL

2) NaOH+HCL

3) Fe (OH) + HNO3

4) Mg+H2SO4

Na₂CO₃ + 2HCl = 2NaCl + CO₂↑ + H₂O;

2Na⁺ + CO₃²⁻ + 2H⁺ + 2Cl⁻ = 2Na⁺ + 2Cl⁻ + CO₂↑ + H₂O;

CO₃²⁻ + 2H⁺ = CO₂↑ + H₂O.

NaOH + HCl = NaCl + H₂O;

Na⁺ + OH⁻ + H⁺ + Cl⁻ = Na⁺ + Cl⁻ + H₂O;

OH⁻ + H⁺ = H₂O.

Fe (OH) ₂↓ + 2HNO₃ = Fe (NO₃) ₂ + H₂O;

Fe (OH) ₂↓ + 2H⁺ + 2NO₃⁻ = Fe²⁺ + 2NO₃⁻ + H₂O;

Fe (OH) ₂↓ + 2H⁺ = Fe²⁺ + H₂O.

Mg + H₂SO₄ = MgSO₄ + H₂↑;

Mg⁰ + 2H⁺ + SO₄²⁻ = Mg²⁺ + SO₄²⁻ + H₂↑;

Mg⁰ + 2H⁺ = Mg²⁺ + H₂↑.