Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

The chemical equation for the reaction of potassium carbonate with nitric acid is shown below. $\text{K}_2\text{CO}_3 + 2\text{HNO}_3 \rightarrow 2\text{KNO}_3 + \text{H}_2\text{O} + \text{CO}_2$ What volume of carbon dioxide is formed from $69\,\text{g}$ of potassium carbonate?

  • A$6\,\text{dm}^3$
  • B$12\,\text{dm}^3$
  • C$24\,\text{dm}^3$
  • D$48\,\text{dm}^3$

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