Concentration

Aqueous sodium hydroxide reacts with dilute sulfuric acid according to the equation:
$2\text{NaOH} + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + 2\text{H}_2\text{O}.$
What volume of 0.500 mol dm⁻³ NaOH is needed to completely neutralise 25.0 cm³ of 0.250 mol dm⁻³ H₂SO₄?