Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

The equation shown represents calcium carbonate reacting with dilute hydrochloric acid. $\text{CaCO}_3 + 2\text{HCl} \rightarrow \text{CaCl}_2 + \text{CO}_2 + \text{H}_2\text{O}$. $10\,\text{g}$ of calcium carbonate is reacted with $100\,\text{cm}^3$ of $1\,\text{mol dm}^{-3}$ hydrochloric acid. The statements below are given. Which statements about the reaction are correct?

  • A1 and 2
  • B1 and 4
  • C2 and 3
  • D3 and 4

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