Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

The reaction equation for calcium carbonate reacting with hydrochloric acid is given below. $\text{CaCO}_3\text{(s)} + 2\text{HCl(aq)} \rightarrow \text{CaCl}_2\text{(aq)} + \text{H}_2\text{O(l)} + \text{CO}_2\text{(g)}$ What number of moles of calcium carbonate would produce $24\,\text{cm}^3$ of carbon dioxide if the acid is in excess?

  • A$1\,\text{mol}$
  • B$0.1\,\text{mol}$
  • C$0.01\,\text{mol}$
  • D$0.001\,\text{mol}$

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