Ответ: Ba(NO₃)₂ = Ba²⁺ + 2NO₃⁻H₃BO₃ = H⁺ + H₂BO₃⁻H₂BO₃⁻ = H⁺ + HBO₃²⁻ HBO₃²⁻ = H⁺ + BO₃³⁻(NH₄)₂SO₄ = 2NH₄⁺ + SO₄²⁻HF = H⁺ + F⁻H₂S = H⁺ + HS⁻HS⁻ = H⁺ + S²⁻Fe(OH)₃ — \\\KHSO₃ = K⁺ + HSO₃⁻HSO₃⁻ = H⁺ + SO₃²⁻