а), б), г)а) NaOH + HCl = NaCl + H₂ONa⁺ + OH⁻ + H⁺ + Cl⁻ = Na⁺ + Cl⁻ + H₂OOH⁻ + H⁺ = H₂Oб) 2 NaOH + CuSO₄ = Cu(OH)₂↓ + Na₂SO₄ 2 Na⁺ + 2 OH⁻ + Cu²⁺ + SO₄²⁻ = Cu(OH)₂↓ + 2 Na⁺ + SO₄²⁻2OH⁻ + Cu²⁺ = Cu(OH)₂↓г) 6 NaOH + P₂O₅ = 2 Na₃PO₄ + 3 H₂O6 Na⁺ + 6 OH⁻ + P₂O₅ = 6Na⁺ + 2 PO₄³⁻ + 3 H₂O6OH⁻ + P₂O₅ = 3 H₂O + 2 PO₄³⁻