Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

The equation for the reaction of calcium carbonate with dilute nitric acid is given below. $\text{CaCO}_3(s) + 2\text{HNO}_3(aq) \rightarrow \text{Ca(NO}_3)_2(aq) + \text{CO}_2(g) + \text{H}_2\text{O}(l)$. $25\,\text{g}$ of calcium carbonate is reacted with an excess of dilute nitric acid. What mass of calcium nitrate is formed, and what volume of carbon dioxide is released at room temperature and pressure?

  • A$29\,\text{g}$; $6\,\text{dm}^3$
  • B$29\,\text{g}$; $12\,\text{dm}^3$
  • C$41\,\text{g}$; $6\,\text{dm}^3$
  • D$41\,\text{g}$; $12\,\text{dm}^3$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI