Chemistry 0620 · IGCSE · Solids, liquids and gases

Solids, liquids and gases — practice question

This equation shows solid magnesium oxide reacting with dilute hydrochloric acid to produce magnesium chloride and water: $\text{MgO} + \text{2HCl} \rightarrow \text{MgCl}_2 + \text{H}_2\text{O}$. Which row gives the state symbols for hydrochloric acid, magnesium chloride and water?

  • A$\text{HCl (aq)},\ \text{MgCl}_2\text{ (aq)},\ \text{H}_2\text{O (l)}$
  • B$\text{HCl (aq)},\ \text{MgCl}_2\text{ (l)},\ \text{H}_2\text{O (l)}$
  • C$\text{HCl (l)},\ \text{MgCl}_2\text{ (aq)},\ \text{H}_2\text{O (aq)}$
  • D$\text{HCl (l)},\ \text{MgCl}_2\text{ (l)},\ \text{H}_2\text{O (aq)}$

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