Chemistry 5070 · O Level · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

Dilute hydrochloric acid reacts with sodium carbonate. $\text{Na}_2\text{CO}_3 + 2\text{HCl} \rightarrow 2\text{NaCl} + \text{H}_2\text{O} + \text{CO}_2$. A sample that contains $0.0800\,\text{mol}$ of sodium carbonate is placed into a solution that contains $0.100\,\text{mol}$ of hydrochloric acid. Which volume of carbon dioxide is formed, measured at room temperature and pressure?

  • A$0.96\,\text{dm}^3$
  • B$1.20\,\text{dm}^3$
  • C$1.92\,\text{dm}^3$
  • D$2.40\,\text{dm}^3$

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