Sodium sulfate, $\text{Na}_2\text{SO}_4$, and sodium hydrogensulfate, $\text{NaHSO}_4$, may each be made from aqueous sodium hydroxide and sulfuric acid. $2\text{NaOH}(aq) + \text{H}_2\text{SO}_4(aq) \rightarrow \text{Na}_2\text{SO}_4(aq) + 2\text{H}_2\text{O}(l)$ $\text{NaOH}(aq) + \text{H}_2\text{SO}_4(aq) \rightarrow \text{NaHSO}_4(aq) + \text{H}_2\text{O}(l)$ $50\,\text{cm}^3$ of $1\,\text{mol dm}^{-3}$ sodium hydroxide is used each time. Which row gives the correct volumes of $1\,\text{mol dm}^{-3}$ sulfuric acid needed to make a sample of sodium sulfate and a sample of sodium hydrogensulfate?
- A$25\,\text{cm}^3$, $50\,\text{cm}^3$
- B$25\,\text{cm}^3$, $12.5\,\text{cm}^3$
- C$50\,\text{cm}^3$, $12.5\,\text{cm}^3$
- D$50\,\text{cm}^3$, $25\,\text{cm}^3$