This question requires consultation of the Data Booklet. One of the substances in a washing powder is sodium hydrogencarbonate, $\text{NaHCO}_3$. During a titration, a sample containing $1.00\,\text{g}$ of washing powder needs $7.15\,\text{cm}^3$ of $0.100\,\text{mol dm}^{-3}$ sulfuric acid to react completely. Only the sodium hydrogencarbonate present in the washing powder reacts with the acid. Determine the percentage by mass of sodium hydrogencarbonate in the washing powder.
- A$3.0$
- B$6.0$
- C$12.0$
- D$24.0$