When H₂SO₄ is neutralized by NaOH in aqueous solution, the net ionic equation is
O 2H⁺ + 2NaOH → 2H₂O + 2Na⁺
O SO₄²⁻ + 2Na⁺ → Na₂SO₄
O H⁺ + OH⁻ → H₂O
O H₂SO₄ + 2OH → 2H₂O + SO₄²⁻