Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

Methane and steam react with the aid of a catalyst. $\text{CH}_4\,(g) + \text{H}_2\text{O}\,(g) \rightarrow \text{CO}\,(g) + 3\text{H}_2\,(g)$. $0.5\,\text{mol}$ of methane reacts completely with $0.5\,\text{mol}$ of steam. What volume of carbon monoxide and hydrogen is formed, when measured at room temperature and pressure?

  • Avolume of CO = $0.5\,\text{dm}^3$, volume of $\text{H}_2$ = $1.5\,\text{dm}^3$
  • Bvolume of CO = $1.0\,\text{dm}^3$, volume of $\text{H}_2$ = $3.0\,\text{dm}^3$
  • Cvolume of CO = $12.0\,\text{dm}^3$, volume of $\text{H}_2$ = $12.0\,\text{dm}^3$
  • Dvolume of CO = $12.0\,\text{dm}^3$, volume of $\text{H}_2$ = $36.0\,\text{dm}^3$

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