In a titration, $25.0\,\text{cm}^3$ of $0.100\,\text{mol dm}^{-3}$ sodium hydroxide is exactly neutralised by $20.0\,\text{cm}^3$ of dilute sulfuric acid. $\text{2NaOH} + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + 2\text{H}_2\text{O}$ Calculate the concentration of the dilute sulfuric acid.
- A$0.0625\,\text{mol dm}^{-3}$
- B$0.0800\,\text{mol dm}^{-3}$
- C$0.125\,\text{mol dm}^{-3}$
- D$0.250\,\text{mol dm}^{-3}$