Chemistry 5070 · O Level · The characteristic properties of acids and bases

The characteristic properties of acids and bases — practice question

Powdered calcium carbonate reacts with dilute hydrochloric acid to form calcium chloride, water and carbon dioxide. What is the correct ionic equation, with state symbols, for this reaction?

  • A$\text{CaCO}_3(s) + 2\text{HCl}(aq) \rightarrow \text{CaCl}_2(aq) + \text{H}_2\text{O}(l) + \text{CO}_2(g)$
  • B$\text{Ca}^{2+}(aq) + \text{CO}_3^{2-}(aq) + 2\text{H}^+(aq) \rightarrow \text{Ca}^{2+}(aq) + \text{H}_2\text{O}(l) + \text{CO}_2(g)$
  • C$\text{CO}_3^{2-}(aq) + 2\text{H}^+(aq) \rightarrow \text{H}_2\text{O}(l) + \text{CO}_2(g)$
  • D$\text{CaCO}_3(s) + 2\text{H}^+(aq) \rightarrow \text{Ca}^{2+}(aq) + \text{H}_2\text{O}(l) + \text{CO}_2(g)$

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